diff --git a/cs.c b/cs.c
index d0400e70..786922b4 100644
--- a/cs.c
+++ b/cs.c
@@ -535,9 +535,6 @@ static int str_replace(char *result, char *target, const char *str1, char *str2)
 static void fill_insn(struct cs_struct *handle, cs_insn *insn, char *buffer, MCInst *mci,
 		PostPrinter_t postprinter, const uint8_t *code)
 {
-#ifndef CAPSTONE_DIET
-	char *sp, *mnem;
-#endif
 	uint16_t copy_size = MIN(sizeof(insn->bytes), insn->size);
 
 	// fill the instruction bytes.