diff --git a/utils/disassembler/arm/Makefile b/utils/disassembler/arm/Makefile
new file mode 100644
index 0000000..786325e
--- /dev/null
+++ b/utils/disassembler/arm/Makefile
@@ -0,0 +1,26 @@
+CFLAGS = -Wall
+
+ifeq ($(findstring CYGWIN,$(shell uname)),CYGWIN)
+OUTPUT=arm_disass.exe
+CROSS=
+CFLAGS+=-mno-cygwin
+else
+OUTPUT=arm_disass
+CROSS=i586-mingw32msvc-
+endif
+
+NATIVECC = gcc
+CC = $(CROSS)gcc
+
+all: $(OUTPUT)
+
+arm_disass: main.c disasm_arm.c
+	gcc $(CFLAGS) -o arm_disass main.c disasm_arm.c
+	strip arm_disass
+
+arm_disass.exe: main.c disasm_arm.c
+	$(CC) $(CFLAGS) -o arm_disass.exe main.c disasm_arm.c
+	$(CROSS)strip arm_disass.exe
+
+clean:
+	rm -f arm_disass main.o disasm_arm.o *~
diff --git a/utils/disassembler/arm/disasm_arm.c b/utils/disassembler/arm/disasm_arm.c
index 4664d0f..631eb9d 100644
--- a/utils/disassembler/arm/disasm_arm.c
+++ b/utils/disassembler/arm/disasm_arm.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <stdint.h>
 
 #define ULONG unsigned long
 #define UCHAR unsigned char
@@ -194,7 +195,7 @@
 
   if(val & 0x2000000) // immidiate
 	{
-    off = (ULONG)((unsigned __int64)(val&0xff) << (32 - 2 * ((val >> 8) & 15))) | ((val&0xff) >> 2 * ((val >> 8) & 15));
+    off = (ULONG)((uint64_t)(val&0xff) << (32 - 2 * ((val >> 8) & 15))) | ((val&0xff) >> 2 * ((val >> 8) & 15));
     sprintf(op2, FRMT" ", off);
 	}
   else
diff --git a/utils/disassembler/arm/main.c b/utils/disassembler/arm/main.c
index 834dc5f..59dad48 100644
--- a/utils/disassembler/arm/main.c
+++ b/utils/disassembler/arm/main.c
@@ -10,7 +10,7 @@
 
 extern void dis_asm(ULONG off, ULONG val, char *stg);
 
-void main(int argc, char **argv)
+int main(int argc, char **argv)
 {
   FILE   *in, *out;
   char   *ptr, stg[256];
@@ -20,7 +20,7 @@
 
   if(argc == 1 || strcmp(argv[1], "--help") == 0)
   { printf("Usage: arm_disass [input file]\n");
-    printf(" disassembles input file to 'disasm.txt'");
+    printf(" disassembles input file to 'disasm.txt'\n");
     exit(-1);
   }
 
@@ -115,4 +115,4 @@
   }
 
   fclose(in);
-}
\ No newline at end of file
+}