diff --git a/src/external/muparser/muparser.pc.in b/src/external/muparser/muparser.pc.in
index 646787cb53..d26e84de8f 100644
--- a/src/external/muparser/muparser.pc.in
+++ b/src/external/muparser/muparser.pc.in
@@ -1,11 +1,9 @@
-prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=${prefix}
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
-
-Name: @PACKAGE_NAME@
-Description: Mathematical expressions parser library
-Version: @MUPARSER_VERSION@
-Requires:
-Libs: -L${libdir} -lmuparser
-Cflags: -I${includedir} @PKG_CONFIG_FLAGS@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+
+Name: @PACKAGE_NAME@
+Description: Mathematical expressions parser library
+Version: @MUPARSER_VERSION@
+Requires:
+Libs: -L${libdir} -lmuparser
+Cflags: -I${includedir} @PKG_CONFIG_FLAGS@
diff --git a/src/gromacs/libgromacs.pc.cmakein b/src/gromacs/libgromacs.pc.cmakein
index af9b5a6dc0..5f58d549bf 100644
--- a/src/gromacs/libgromacs.pc.cmakein
+++ b/src/gromacs/libgromacs.pc.cmakein
@@ -1,5 +1,4 @@
-prefix=@CMAKE_INSTALL_PREFIX@
-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+libdir=@CMAKE_INSTALL_FULL_LIBDIR@

 Name: libgromacs@GMX_LIBS_SUFFIX@
 Description: Gromacs library