diff --git a/src/intel/common/gen_gem.h b/src/intel/common/gen_gem.h
index 8df2c249e48..2f609837a87 100644
--- a/src/intel/common/gen_gem.h
+++ b/src/intel/common/gen_gem.h
@@ -25,6 +25,7 @@
 #define GEN_GEM_H
 
 #include <stdint.h>
+#include <unistd.h>
 
 static inline uint64_t
 gen_canonical_address(uint64_t v)