diff --git a/src/libafs/MakefileProto.LINUX.in b/src/libafs/MakefileProto.LINUX.in
index 6e7b290007..564b2ef0cb 100644
--- a/src/libafs/MakefileProto.LINUX.in
+++ b/src/libafs/MakefileProto.LINUX.in
@@ -127,7 +127,7 @@ EXTRA_CFLAGS = -I$(LINUX_KERNEL_PATH)/arch/um/include -I$(LINUX_KERNEL_PATH)/arc
 INCLUDES = -I. -I../ -I${TOP_OBJDIR}/src/config \
   -I${TOP_SRCDIR}/rx -I${TOP_OBJDIR}/src/rxstat
 
-CFLAGS = $(CCFLAGS) $(DEFINES) $(INCLUDES)
+CFLAGS = $(CCFLAGS) $(KERN_DBG) $(DEFINES) $(INCLUDES)
 
 # Name of directory to hold object files and libraries.
 KOBJ = MODLOAD