diff --git a/src/compiler/nir/nir_lower_io_indirect_loads.c b/src/compiler/nir/nir_lower_io_indirect_loads.c
index 00f0a8750ea..123560622fe 100644
--- a/src/compiler/nir/nir_lower_io_indirect_loads.c
+++ b/src/compiler/nir/nir_lower_io_indirect_loads.c
@@ -23,6 +23,7 @@
 
 #include "nir.h"
 #include "nir_builder.h"
+#include <c99_alloca.h>
 
 typedef struct {
    nir_variable *var[INTERP_MODE_COUNT];