diff --git a/makefile b/makefile
index 35d1cb5..0ce5b6c 100644
--- a/makefile
+++ b/makefile
@@ -48,13 +48,13 @@ CFLAGS += -DNDEBUG -O2
 endif
 
 CFLAGS  += -Ilib/glad/include -Ilib/glfw/include -Ilib/libarchive/include
-LDFLAGS += -lc -lm lib/glad/gl.o lib/glfw/src/libglfw3.a
+LDFLAGS += -lm lib/glad/gl.o lib/glfw/src/libglfw3.a
 
 # get source files
 SRC := $(wildcard src/*.c) $(wildcard src/**/*.c)
 RES := $(wildcard res/*.glsl)
 ifeq ($(DEBUG),test)
-SRC := $(filter-out src/main.c, $(SRC)) $(wildcard test/**/*.c)
+SRC := $(filter-out src/main.c, $(SRC)) $(wildcard test/*.c) $(wildcard test/**/*.c)
 endif
 
 NAME += $(if $(filter 1,$(ISWIN)),.exe,)