diff --git a/configure/CONFIG.gnuCommon b/configure/CONFIG.gnuCommon
index c0f8dbeea..3d557e0ba 100644
--- a/configure/CONFIG.gnuCommon
+++ b/configure/CONFIG.gnuCommon
@@ -40,4 +40,3 @@ SHRLIB_LDFLAGS_NO =
 
 DEPENDS_FLAG = -MM
 
-CPPSNCFLAGS += -x c