diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index e888090f209..3d2fc1429b4 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -20,6 +20,8 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
+#define __STDC_FORMAT_MACROS 1
+#include <inttypes.h> /* for PRIx64 macro */
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
diff --git a/src/compiler/glsl/ir_print_visitor.cpp b/src/compiler/glsl/ir_print_visitor.cpp
index 0763277737e..debbdadebcc 100644
--- a/src/compiler/glsl/ir_print_visitor.cpp
+++ b/src/compiler/glsl/ir_print_visitor.cpp
@@ -21,6 +21,8 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#define __STDC_FORMAT_MACROS 1
+#include <inttypes.h> /* for PRIx64 macro */
 #include "ir_print_visitor.h"
 #include "compiler/glsl_types.h"
 #include "glsl_parser_extras.h"