diff --git a/winsup/ChangeLog b/winsup/ChangeLog
index 2896e29f5..3aab10c63 100644
--- a/winsup/ChangeLog
+++ b/winsup/ChangeLog
@@ -1,3 +1,7 @@
+2003-03-09  Christopher Faylor  <cgf@redhat.com>
+
+	* Makefile.common: Avoid double slashes in GCC_INCLUDE.
+
 2003-02-12  Christopher Faylor  <cgf@redhat.com>
 
 	* MAINTAINERS: Remove out-of-date file.
diff --git a/winsup/Makefile.common b/winsup/Makefile.common
index 18910ae3b..c98239ffb 100644
--- a/winsup/Makefile.common
+++ b/winsup/Makefile.common
@@ -115,7 +115,7 @@ endif
 libgcc:=${subst \,/,${shell $(CC_FOR_TARGET) -print-libgcc-file-name}}
 gcc_libdir:=${word 1,${dir $(libgcc)}}
 ifeq (,${findstring $(gcc_libdir),$(CFLAGS) $(CXXFLAGS) $(CXX) $(CC)})
-GCC_INCLUDE:=-I$(gcc_libdir)/include
+GCC_INCLUDE:=${subst //,/,-I$(gcc_libdir)/include}
 endif
 
 COMPILE_CXX=$(CXX) $c -nostdinc++ -nostdinc $(ALL_CXXFLAGS) $(GCC_INCLUDE) \