diff --git a/common.mk b/common.mk
index 0d2ad51e..a6d6c4e3 100644
--- a/common.mk
+++ b/common.mk
@@ -56,6 +56,7 @@ I3_CPPFLAGS += -DMAJOR_VERSION=${MAJOR_VERSION}
 I3_CPPFLAGS += -DMINOR_VERSION=${MINOR_VERSION}
 I3_CPPFLAGS += -DPATCH_VERSION=${PATCH_VERSION}
 I3_CPPFLAGS += -DSYSCONFDIR=\"${SYSCONFDIR}\"
+I3_CPPFLAGS += -DI3__FILE__=__FILE__
 
 
 ## Libraries flags
diff --git a/include/log.h b/include/log.h
index a8209cca..0854628d 100644
--- a/include/log.h
+++ b/include/log.h
@@ -17,7 +17,7 @@
    is, delete the preceding comma */
 #define LOG(fmt, ...) verboselog(fmt, ##__VA_ARGS__)
 #define ELOG(fmt, ...) errorlog("ERROR: " fmt, ##__VA_ARGS__)
-#define DLOG(fmt, ...) debuglog("%s:%s:%d - " fmt, __FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__)
+#define DLOG(fmt, ...) debuglog("%s:%s:%d - " fmt, I3__FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__)
 
 extern char *errorfilename;
 extern char *shmlogname;
diff --git a/src/assignments.c b/src/assignments.c
index 696eca49..655816a3 100644
--- a/src/assignments.c
+++ b/src/assignments.c
@@ -1,4 +1,5 @@
-#line 2 "assignments.c"
+#undef I3__FILE__
+#define I3__FILE__ "assignments.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/click.c b/src/click.c
index 52a7d3b5..23b6be4f 100644
--- a/src/click.c
+++ b/src/click.c
@@ -1,4 +1,5 @@
-#line 2 "click.c"
+#undef I3__FILE__
+#define I3__FILE__ "click.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/commands.c b/src/commands.c
index 6d508af9..02d602f0 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -1,4 +1,5 @@
-#line 2 "commands.c"
+#undef I3__FILE__
+#define I3__FILE__ "commands.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/commands_parser.c b/src/commands_parser.c
index 71f1c149..20a7d67a 100644
--- a/src/commands_parser.c
+++ b/src/commands_parser.c
@@ -1,4 +1,5 @@
-#line 2 "commands_parser.c"
+#undef I3__FILE__
+#define I3__FILE__ "commands_parser.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/con.c b/src/con.c
index 8f51df31..0c82163a 100644
--- a/src/con.c
+++ b/src/con.c
@@ -1,4 +1,5 @@
-#line 2 "con.c"
+#undef I3__FILE__
+#define I3__FILE__ "con.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/config.c b/src/config.c
index 4757db20..c256a3b7 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1,4 +1,5 @@
-#line 2 "config.c"
+#undef I3__FILE__
+#define I3__FILE__ "config.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/debug.c b/src/debug.c
index 4841840f..2dcdb56a 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -1,4 +1,5 @@
-#line 2 "debug.c"
+#undef I3__FILE__
+#define I3__FILE__ "debug.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/ewmh.c b/src/ewmh.c
index afc4eb90..45d4e5fe 100644
--- a/src/ewmh.c
+++ b/src/ewmh.c
@@ -1,4 +1,5 @@
-#line 2 "ewmh.c"
+#undef I3__FILE__
+#define I3__FILE__ "ewmh.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/fake_outputs.c b/src/fake_outputs.c
index 7c957225..e1153299 100644
--- a/src/fake_outputs.c
+++ b/src/fake_outputs.c
@@ -1,4 +1,5 @@
-#line 2 "fake_outputs.c"
+#undef I3__FILE__
+#define I3__FILE__ "fake_outputs.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/floating.c b/src/floating.c
index 69241b58..3d2c1d31 100644
--- a/src/floating.c
+++ b/src/floating.c
@@ -1,4 +1,5 @@
-#line 2 "floating.c"
+#undef I3__FILE__
+#define I3__FILE__ "floating.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/handlers.c b/src/handlers.c
index 3a8d2344..a69a6269 100644
--- a/src/handlers.c
+++ b/src/handlers.c
@@ -1,4 +1,5 @@
-#line 2 "handlers.c"
+#undef I3__FILE__
+#define I3__FILE__ "handlers.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/ipc.c b/src/ipc.c
index 967e8871..8db69259 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1,4 +1,5 @@
-#line 2 "ipc.c"
+#undef I3__FILE__
+#define I3__FILE__ "ipc.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/key_press.c b/src/key_press.c
index e8fbe17c..2a578d66 100644
--- a/src/key_press.c
+++ b/src/key_press.c
@@ -1,4 +1,5 @@
-#line 2 "key_press.c"
+#undef I3__FILE__
+#define I3__FILE__ "key_press.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/load_layout.c b/src/load_layout.c
index 2f2d5a64..795fb6d8 100644
--- a/src/load_layout.c
+++ b/src/load_layout.c
@@ -1,4 +1,5 @@
-#line 2 "load_layout.c"
+#undef I3__FILE__
+#define I3__FILE__ "load_layout.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/log.c b/src/log.c
index 944edb3f..ab75395f 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,4 +1,5 @@
-#line 2 "log.c"
+#undef I3__FILE__
+#define I3__FILE__ "log.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/main.c b/src/main.c
index d6a7f617..b60bb6d7 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,4 +1,5 @@
-#line 2 "main.c"
+#undef I3__FILE__
+#define I3__FILE__ "main.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/manage.c b/src/manage.c
index 2d08afaa..1dc39b9e 100644
--- a/src/manage.c
+++ b/src/manage.c
@@ -1,4 +1,5 @@
-#line 2 "manage.c"
+#undef I3__FILE__
+#define I3__FILE__ "manage.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/match.c b/src/match.c
index 08ec0310..1014de84 100644
--- a/src/match.c
+++ b/src/match.c
@@ -1,4 +1,5 @@
-#line 2 "match.c"
+#undef I3__FILE__
+#define I3__FILE__ "match.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/move.c b/src/move.c
index a4fc77b3..46b90177 100644
--- a/src/move.c
+++ b/src/move.c
@@ -1,4 +1,5 @@
-#line 2 "move.c"
+#undef I3__FILE__
+#define I3__FILE__ "move.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/output.c b/src/output.c
index dc676ba4..fe8d4983 100644
--- a/src/output.c
+++ b/src/output.c
@@ -1,4 +1,5 @@
-#line 2 "output.c"
+#undef I3__FILE__
+#define I3__FILE__ "output.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/randr.c b/src/randr.c
index e1175473..6971ba97 100644
--- a/src/randr.c
+++ b/src/randr.c
@@ -1,4 +1,5 @@
-#line 2 "randr.c"
+#undef I3__FILE__
+#define I3__FILE__ "randr.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/regex.c b/src/regex.c
index 93e1af2d..60dee5cc 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -1,4 +1,5 @@
-#line 2 "regex.c"
+#undef I3__FILE__
+#define I3__FILE__ "regex.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/render.c b/src/render.c
index f933433f..9c0debb3 100644
--- a/src/render.c
+++ b/src/render.c
@@ -1,4 +1,5 @@
-#line 2 "render.c"
+#undef I3__FILE__
+#define I3__FILE__ "render.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/resize.c b/src/resize.c
index b0c7a052..b65344a2 100644
--- a/src/resize.c
+++ b/src/resize.c
@@ -1,4 +1,5 @@
-#line 2 "resize.c"
+#undef I3__FILE__
+#define I3__FILE__ "resize.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/scratchpad.c b/src/scratchpad.c
index da50cee7..6bba823f 100644
--- a/src/scratchpad.c
+++ b/src/scratchpad.c
@@ -1,4 +1,5 @@
-#line 2 "scratchpad.c"
+#undef I3__FILE__
+#define I3__FILE__ "scratchpad.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/sighandler.c b/src/sighandler.c
index a218b021..bae73c16 100644
--- a/src/sighandler.c
+++ b/src/sighandler.c
@@ -1,4 +1,5 @@
-#line 2 "sighandler.c"
+#undef I3__FILE__
+#define I3__FILE__ "sighandler.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/startup.c b/src/startup.c
index b462a853..b0aa2ca3 100644
--- a/src/startup.c
+++ b/src/startup.c
@@ -1,4 +1,5 @@
-#line 2 "startup.c"
+#undef I3__FILE__
+#define I3__FILE__ "startup.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/tree.c b/src/tree.c
index cee61b9d..d2dc10ea 100644
--- a/src/tree.c
+++ b/src/tree.c
@@ -1,4 +1,5 @@
-#line 2 "tree.c"
+#undef I3__FILE__
+#define I3__FILE__ "tree.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/util.c b/src/util.c
index 45e63e1c..db2f0204 100644
--- a/src/util.c
+++ b/src/util.c
@@ -1,4 +1,5 @@
-#line 2 "util.c"
+#undef I3__FILE__
+#define I3__FILE__ "util.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/window.c b/src/window.c
index 15f722e2..6ec63a8b 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1,4 +1,5 @@
-#line 2 "window.c"
+#undef I3__FILE__
+#define I3__FILE__ "window.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/workspace.c b/src/workspace.c
index 8e834dbd..85331181 100644
--- a/src/workspace.c
+++ b/src/workspace.c
@@ -1,4 +1,5 @@
-#line 2 "workspace.c"
+#undef I3__FILE__
+#define I3__FILE__ "workspace.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/x.c b/src/x.c
index 661dece6..65b3eb1f 100644
--- a/src/x.c
+++ b/src/x.c
@@ -1,4 +1,5 @@
-#line 2 "x.c"
+#undef I3__FILE__
+#define I3__FILE__ "x.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/xcb.c b/src/xcb.c
index 3d2ff670..be3f536a 100644
--- a/src/xcb.c
+++ b/src/xcb.c
@@ -1,4 +1,5 @@
-#line 2 "xcb.c"
+#undef I3__FILE__
+#define I3__FILE__ "xcb.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/xcursor.c b/src/xcursor.c
index 48f713a7..7683b0d3 100644
--- a/src/xcursor.c
+++ b/src/xcursor.c
@@ -1,4 +1,5 @@
-#line 2 "xcursor.c"
+#undef I3__FILE__
+#define I3__FILE__ "xcursor.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
diff --git a/src/xinerama.c b/src/xinerama.c
index 5c0504ca..7e5b5aeb 100644
--- a/src/xinerama.c
+++ b/src/xinerama.c
@@ -1,4 +1,5 @@
-#line 2 "xinerama.c"
+#undef I3__FILE__
+#define I3__FILE__ "xinerama.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *