diff --git a/Makefile b/Makefile
index eac16ef..798faee 100644
--- a/Makefile
+++ b/Makefile
@@ -12,16 +12,16 @@ clean: testclean
 	cd asm; make clean
 
 bin/c2t: c2t.c c2t.h
-	gcc -Wall -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t c2t.c -lm
+	gcc -Wall -Wno-strict-aliasing -Wno-misleading-indentation -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t c2t.c -lm
 
 bin/c2t-96h: c2t-96h.c c2t.h
-	gcc -Wall -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t-96h c2t-96h.c -lm
+	gcc -Wall -Wno-strict-aliasing -Wno-misleading-indentation -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t-96h c2t-96h.c -lm
 
 bin/c2t.exe: c2t.c c2t.h
-	$(WIN32GCC) -Wall -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t.exe c2t.c
+	$(WIN32GCC) -Wall -Wno-strict-aliasing -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t.exe c2t.c
 
 bin/c2t-96h.exe: c2t-96h.c c2t.h
-	$(WIN32GCC) -Wall -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t-96h.exe c2t-96h.c
+	$(WIN32GCC) -Wall -Wno-strict-aliasing -Wno-unused-value -Wno-unused-function -I. -O3 -o bin/c2t-96h.exe c2t-96h.c
 
 c2t.h: mon/dos33.boot1.mon mon/dos33.boot2.mon asm/autoload.s asm/diskload2.s asm/diskload3.s asm/diskload8000.s asm/diskload9600.s asm/fastload8000.s asm/fastload9600.s asm/fastloadcd.s asm/inflate.s
 	./makeheader
diff --git a/README.md b/README.md
index e1be004..e84ed12 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,11 @@ sudo chmod 755 /usr/local/bin/c2t
 
 ## Build from Source
 
+Prerequisites:
+
+- `cl65` version 2.13.3 (<https://github.com/mrdudz/cc65-old/blob/master/cc65-sources-2.13.3.tar.bz2>)
+
+
 ```
 git clone https://github.com/datajerk/c2t.git
 ```
diff --git a/asm/Makefile b/asm/Makefile
index 3b0fce3..425c212 100644
--- a/asm/Makefile
+++ b/asm/Makefile
@@ -1,9 +1,5 @@
 CL = cl65
-CL_FLAGS = -t none --listing # --list-bytes 100
-#CL_FLAGS = -t apple1 -C apple1-16k.cfg  --listing --list-bytes 100
-CC = cl65
-CC_FLAGS = --static-locals -t apple1 -C apple1-16k.cfg
-C2T = c2t
+CL_FLAGS = -t none --listing --list-bytes 100
 
 ASRC = $(shell echo *.s)
 AOBJ = $(ASRC:%.s=%.o)
@@ -18,10 +14,3 @@ clean:
 
 %: %.s
 	$(CL) $(CL_FLAGS) $< 
-
-%: %.c
-	$(CC) $(CC_FLAGS) $< 
-
-%.mon: %
-	$(C2T) $< $@
-
diff --git a/bin/c2t b/bin/c2t
index e5242e9..9d4ca77 100755
Binary files a/bin/c2t and b/bin/c2t differ
diff --git a/bin/c2t-96h b/bin/c2t-96h
index a0d7964..c8a6ac9 100755
Binary files a/bin/c2t-96h and b/bin/c2t-96h differ
diff --git a/bin/c2t-96h.exe b/bin/c2t-96h.exe
deleted file mode 100755
index 9568d1b..0000000
Binary files a/bin/c2t-96h.exe and /dev/null differ
diff --git a/bin/c2t.exe b/bin/c2t.exe
deleted file mode 100755
index fd04989..0000000
Binary files a/bin/c2t.exe and /dev/null differ
diff --git a/c2t.c b/c2t.c
index 65953cd..9c1df22 100644
--- a/c2t.c
+++ b/c2t.c
@@ -468,7 +468,8 @@ int main(int argc, char **argv)
 
 	if(outputtype == MONITOR) {
 		int i, j, saddr;
-		unsigned long cmp_len;
+		// unsigned long cmp_len;
+		size_t cmp_len;
 		unsigned char *cmp_data;
 
 		for(i=0;i<numseg;i++) {