diff --git a/src/NETGEN/netgen45lib64.patch b/src/NETGEN/netgen45lib64.patch
index 40edbf9..1593971 100755
--- a/src/NETGEN/netgen45lib64.patch
+++ b/src/NETGEN/netgen45lib64.patch
@@ -7,7 +7,7 @@ diff -ur netgen-4.5.old/libsrc/makefile.inc netgen-4.5.new/libsrc/makefile.inc
  #
 -CPLUSPLUSFLAGS1 = -c -I$(LIBSRC_DIR)/include -I$(OCCINC_DIR) \
 +CPLUSPLUSFLAGS1 = -c -m64 -fPIC -I$(LIBSRC_DIR)/include -I$(OCCINC_DIR) \
- 	-DOCCGEOMETRY -DOCC52 -DHAVE_IOSTREAM -DHAVE_LIMITS
+ 	-DOCCGEOMETRY -DOCC52 -DHAVE_IOSTREAM -DHAVE_LIMITS_H
  #
  ARFLAGS = r
 diff -ur netgen-4.5.old/libsrc/makefile.mach.LINUX64 netgen-4.5.new/libsrc/makefile.mach.LINUX64