1 files changed, 1 insertions, 0 deletions

diff --git a/MLKRatio.m b/MLKRatio.m
index 476af42..4c434c9 100644
--- a/MLKRatio.m
+++ b/MLKRatio.m
@@ -17,6 +17,7 @@
  */
 
 #import "MLKRatio.h"
+#import "runtime-compatibility.h"
 #import "util.h"
 
 #import <Foundation/NSString.h>