diff --git a/build/modmake.rules.in b/build/modmake.rules.in
index 2ca0b99a8e..9d037acf50 100644
--- a/build/modmake.rules.in
+++ b/build/modmake.rules.in
@@ -26,8 +26,8 @@ DEFS=@DEFS@
 PREFIX = @prefix@
 MODINSTDIR = @modinstdir@
 
-DYLD_LIBRARY_PATH=${_libdir}:$DYLD_LIBRARY_PATH
-LD_LIBRARY_PATH=${_libdir}:$LD_LIBRARY_PATH
+DYLD_LIBRARY_PATH=@libdir@:$DYLD_LIBRARY_PATH
+LD_LIBRARY_PATH=@libdir@:$LD_LIBRARY_PATH
 OSARCH=`uname -s`
 DYNAMIC_LIB_EXTEN = @DYNAMIC_LIB_EXTEN@
 SOLINK = @SOLINK@