diff --git a/include/props.mak b/include/props.mak
index 56245fe..225a676 100644
--- a/include/props.mak
+++ b/include/props.mak
@@ -1,10 +1,12 @@
 CPPFLAGS := $(CPPFLAGS) -MMD -MP
 ifeq ($(CFG),Debug)
 CPPFLAGS := $(CPPFLAGS) -D_DEBUG
-CXXFLAGS := -Og
+CFLAGS := $(CFLAGS) -Og -g
+CXXFLAGS := $(CXXFLAGS) -Og -g
 else
 CPPFLAGS := $(CPPFLAGS) -DNDEBUG
-CXXFLAGS := -O3
+CFLAGS := $(CFLAGS) -O3
+CXXFLAGS := $(CXXFLAGS) -O3
 endif
 
 OBJS := $(SRCS:%=%.o)