diff --git a/gnu/packages/embedded.scm b/gnu/packages/embedded.scm
index 5ea2b17197..a65998c369 100644
--- a/gnu/packages/embedded.scm
+++ b/gnu/packages/embedded.scm
@@ -1013,6 +1013,8 @@ SPI, I2C, JTAG.")
                             "uptools/atcmd/atinterf.c")
                (("/opt/freecalypso/loadtools")
                 (string-append (assoc-ref outputs "out") "/lib/freecalypso/loadtools"))
+               (("\\$\\{INSTALL_PREFIX\\}/loadtools")
+                (string-append (assoc-ref outputs "out") "/lib/freecalypso/loadtools"))
                (("/opt/freecalypso")
                 (assoc-ref outputs "out")))
              #t)))))