diff --git a/src/cc65/opcodes.h b/src/cc65/opcodes.h
index 8267d9550..bdb0c28a2 100644
--- a/src/cc65/opcodes.h
+++ b/src/cc65/opcodes.h
@@ -114,7 +114,7 @@ typedef enum {
     OP65_SED,
     OP65_SEI,
     OP65_STA,
-    OP65_STP, /* 65c02, 65816 stop */
+    OP65_STP,                   /* 65c02, 65816 stop */
     OP65_STX,
     OP65_STY,
     OP65_STZ,