diff --git a/TOOLS/alaw-gen.c b/TOOLS/alaw-gen.c
index 77a8fe9778..0f32ad4d87 100644
--- a/TOOLS/alaw-gen.c
+++ b/TOOLS/alaw-gen.c
@@ -15,8 +15,8 @@ system("sox -t raw -A -r 8000 -b alaw.dat -t sw alaw.out");
 
 printf("// Generated by TOOLS/alaw-gen.c\n\n");
 
-printf("#ifndef ALAW_H\n");
-printf("#define ALAW_H\n");
+printf("#ifndef MPLAYER_ALAW_H\n");
+printf("#define MPLAYER_ALAW_H\n");
 
 printf("\nconst short alaw2short[]={\n");
 
@@ -46,7 +46,7 @@ for(i=0;i<256;i++){
 fclose(f);
 printf("};\n\n");
 
-printf("#endif /* ALAW_H */\n");
+printf("#endif /* MPLAYER_ALAW_H */\n");
 
 return 0;
 }