diff --git a/Makefile b/Makefile
index 2791d54bea..08aab13ea2 100644
--- a/Makefile
+++ b/Makefile
@@ -49,7 +49,7 @@ TARGET = papermario
 CPPFLAGS   = -Iinclude -Isrc -D _LANGUAGE_C -ffreestanding -DF3DEX_GBI_2
 ASFLAGS    = -EB -Iinclude -march=vr4300 -mtune=vr4300
 OLDASFLAGS = -EB -Iinclude -G 0
-CFLAGS     = -O2 -quiet -G 0 -mcpu=vr4300 -mfix4300 -mips3 -mgp32 -mfp32
+CFLAGS     = -O2 -quiet -G 0 -mcpu=vr4300 -mfix4300 -mips3 -mgp32 -mfp32 -Wimplicit -Wuninitialized -Wshadow
 LDFLAGS    = -T undefined_syms.txt -T undefined_funcs.txt -T $(LD_SCRIPT) -Map $(BUILD_DIR)/papermario.map --no-check-sections
 
 ######################## Targets #############################