diff --git a/configure/RULES_BUILD b/configure/RULES_BUILD
index 38ffe78bb..969e87fca 100644
--- a/configure/RULES_BUILD
+++ b/configure/RULES_BUILD
@@ -114,7 +114,6 @@ LIBTARGETS += $(INSTALL_LIBS) $(INSTALL_MUNCHS)
 ifeq ($(strip $(SHARED_LIBRARIES)),YES)
 CFLAGS +=  $($(ANSI)_SHRLIB_CFLAGS_YES)
 CXXFLAGS +=  $($(ANSI)_SHRLIB_CFLAGS_YES)
-PROD_VERSION =$(SHRLIB_VERSION)
 SHRLIB_LINKER = $(CXX)
 LIBTARGETS += $(SHRLIBNAME) $(INSTALL_SHRLIBS) $(INSTALL_DLL_LINK_LIBS)
 endif # SHARED_LIBRARIES=YES