diff --git a/Makefile b/Makefile
index 4a70ec2bd..05cd63404 100644
--- a/Makefile
+++ b/Makefile
@@ -327,9 +327,11 @@ ifneq ($(filter y,$(DEP_HTTP)),)
 endif
 
 ifneq ($(OS),osx)
-	EXE_LIBS += $(QB_CORE_LIB)
+	EXE_LIBS += $(QB_CORE_LIB) $(GLEW_OBJS)
 
 	LICENSE_IN_USE += freeglut
+else
+	EXE_LIBS += $(GLEW_OBJS)
 endif
 
 ifeq ($(OS),win)
diff --git a/internal/c/parts/core/build.mk b/internal/c/parts/core/build.mk
index fc557614f..f84fdebfc 100644
--- a/internal/c/parts/core/build.mk
+++ b/internal/c/parts/core/build.mk
@@ -12,18 +12,18 @@
 # Copy all .c files from the src directory into internal/c/parts/core/freeglut (after making QB64-PE specific changes)
 # Copy the include directory to internal/c/parts/core/freeglut
 
-FREEGLUT_SRCS := \
-	$(wildcard $(PATH_INTERNAL_C)/parts/core/freeglut/*.c) \
-	$(wildcard $(PATH_INTERNAL_C)/parts/core/glew/*.c)
+FREEGLUT_SRCS := $(wildcard $(PATH_INTERNAL_C)/parts/core/freeglut/*.c)
+GLEW_SRCS := $(PATH_INTERNAL_C)/parts/core/glew/glew.c
 
 FREEGLUT_INCLUDE := -I$(PATH_INTERNAL_C)/parts/core/freeglut/include -I$(PATH_INTERNAL_C)/parts/core/glew/include
 
 FREEGLUT_OBJS := $(FREEGLUT_SRCS:.c=.o)
+GLEW_OBJS := $(GLEW_SRCS:.c=.o)
 
 FREEGLUT_LIB := $(PATH_INTERNAL_C)/parts/core/freeglut.a
 
 $(PATH_INTERNAL_C)/parts/core/glew/%.o: $(PATH_INTERNAL_C)/parts/core/glew/%.c
-	$(CC) -O3 $(CFLAGS) $(FREEGLUT_INCLUDE) -DGLEW_STATIC -Wall $< -c -o $@
+	$(CC) -O1 $(CFLAGS) $(FREEGLUT_INCLUDE) -DGLEW_STATIC -Wall $< -c -o $@
 
 $(PATH_INTERNAL_C)/parts/core/freeglut/%.o: $(PATH_INTERNAL_C)/parts/core/freeglut/%.c
 	$(CC) -O3 $(CFLAGS) $(FREEGLUT_INCLUDE) -DFREEGLUT_STATIC -Wall $< -c -o $@
@@ -35,4 +35,4 @@ QB_CORE_LIB := $(FREEGLUT_LIB)
 
 CXXFLAGS += $(FREEGLUT_INCLUDE)
 
-CLEAN_LIST += $(FREEGLUT_LIB) $(FREEGLUT_OBJS)
+CLEAN_LIST += $(FREEGLUT_LIB) $(FREEGLUT_OBJS) $(GLEW_OBJS)