diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
index 42a53ecb092..805a50be099 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -115,7 +115,7 @@ static LLVMEnsureMultithreaded lLVMEnsureMultithreaded;
 
 }
 
-static once_flag init_native_targets_once_flag;
+static once_flag init_native_targets_once_flag = ONCE_FLAG_INIT;
 
 static void init_native_targets()
 {