diff --git a/src/interfaces/ecpg/preproc/Makefile.in b/src/interfaces/ecpg/preproc/Makefile.in
index d14f97b86f276a8e60afc81423d8800d25245db2..4fbe16915e2854a18bbc7ffe9d5bf349799468b7 100644
--- a/src/interfaces/ecpg/preproc/Makefile.in
+++ b/src/interfaces/ecpg/preproc/Makefile.in
@@ -7,7 +7,7 @@ PATCHLEVEL=0
 
 CFLAGS+=-I../include -DMAJOR_VERSION=$(MAJOR_VERSION) \
 	-DMINOR_VERSION=$(MINOR_VERSION) -DPATCHLEVEL=$(PATCHLEVEL) \
-	-DINCLUDE_PATH=\"$(HEADERDIR)\" -g
+	-DINCLUDE_PATH=\"$(HEADERDIR)\"
 
 OBJS=preproc.o pgc.o type.o ecpg.o ecpg_keywords.o output.o\
     keywords.o c_keywords.o ../lib/typename.o descriptor.o variable.o