diff --git a/build-aux/hydra/gnu-system.scm b/build-aux/hydra/gnu-system.scm
index 9a47b4f423..c612ff1f12 100644
--- a/build-aux/hydra/gnu-system.scm
+++ b/build-aux/hydra/gnu-system.scm
@@ -210,10 +210,6 @@ valid."
              #f)))))
 
 
-(define %hydra-supported-systems
-  ;; This is the list of system types for which build slaves are available.
-  '("x86_64-linux" "i686-linux" "mips64el-linux"))
-
 ;;;
 ;;; Hydra entry point.
 ;;;
diff --git a/guix/packages.scm b/guix/packages.scm
index 0e4cce17e1..a979f31a32 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -95,6 +95,7 @@
             package-grafts
 
             %supported-systems
+            %hydra-supported-systems
             supported-package?
 
             &package-error
@@ -210,6 +211,11 @@ corresponds to the arguments expected by `set-path-environment-variable'."
   ;; expect all packages to build successfully here.
   '("x86_64-linux" "i686-linux" "armhf-linux" "mips64el-linux"))
 
+(define %hydra-supported-systems
+  ;; This is the list of system types for which build slaves are available.
+  (delete "armhf-linux" %supported-systems))
+
+
 ;; A package.
 (define-record-type* <package>
   package make-package