diff --git a/build.inc b/build.inc
index c2d5283..e9438c0 100644
--- a/build.inc
+++ b/build.inc
@@ -6,7 +6,7 @@
 %if 0%{?suse_version} > 1140
 export WARN_DIS="$WARN_DIS -Wno-unused-but-set-variable -fno-strict-aliasing -Wno-unused-parameter "
 %endif
-export CFLAGS="$RPM_OPT_FLAGS -DPIC -fPIC -DUNDEF_HAVE_INITGROUPS -DFORCE_INIT_OF_VARS $WARN_DIS "
+export CFLAGS="$RPM_OPT_FLAGS -DPIC -fPIC -DFORCE_INIT_OF_VARS $WARN_DIS "
 export CXXFLAGS="$CFLAGS -fno-exceptions -fno-rtti"
 
 %if 0%{use_cmake} < 1