diff --git a/arch/AArch64/AArch64InstPrinter.c b/arch/AArch64/AArch64InstPrinter.c
index aae6b315e..08f9b35be 100644
--- a/arch/AArch64/AArch64InstPrinter.c
+++ b/arch/AArch64/AArch64InstPrinter.c
@@ -964,6 +964,10 @@ DEFINE_printMatrix(0);
 \
 		const char *RegName = getRegisterName(MCOperand_getReg(RegOp), \
 						      AArch64_NoRegAltName); \
+\
+		/* Diet builds have no register-name table; skip printing. */ \
+		if (!RegName) \
+			return; \
 \
 		unsigned buf_len = strlen(RegName) + 1; \
 		char *Base = cs_mem_calloc(1, buf_len); \