diff --git a/src/amd/llvm/ac_llvm_util.c b/src/amd/llvm/ac_llvm_util.c
index 1d47d35cf5d..503b19c245e 100644
--- a/src/amd/llvm/ac_llvm_util.c
+++ b/src/amd/llvm/ac_llvm_util.c
@@ -40,7 +40,7 @@
 #include <stdio.h>
 #include <string.h>
 
-static void ac_init_llvm_target()
+static void ac_init_llvm_target(void)
 {
    LLVMInitializeAMDGPUTargetInfo();
    LLVMInitializeAMDGPUTarget();