diff --git a/platform/darwin/src/NSExpression+MGLAdditions.mm b/platform/darwin/src/NSExpression+MGLAdditions.mm
index 5f1a1e765..129c9a740 100644
--- a/platform/darwin/src/NSExpression+MGLAdditions.mm
+++ b/platform/darwin/src/NSExpression+MGLAdditions.mm
@@ -31,7 +31,7 @@
             return { number.intValue };
         } else if ((strcmp([number objCType], @encode(double))) == 0) {
             return { number.doubleValue };
-        } else if ((strcmp([number objCType], @encode(bool))) == 0) {
+        } else if ((strcmp([number objCType], @encode(char))) == 0) {
             return { number.boolValue };
         }
     }
diff --git a/platform/darwin/test/MGLFilterTests.mm b/platform/darwin/test/MGLFilterTests.mm
index 04cb82fac..5b102e2e8 100644
--- a/platform/darwin/test/MGLFilterTests.mm
+++ b/platform/darwin/test/MGLFilterTests.mm
@@ -42,6 +42,7 @@
     NSPredicate *typePredicate = [NSPredicate predicateWithFormat:@"%K == %@", @"$type", @"Feature"];
     NSPredicate *idPredicate = [NSPredicate predicateWithFormat:@"%K == %@", @"$id", @"1234123"];
     NSPredicate *specialCharsPredicate = [NSPredicate predicateWithFormat:@"%K == %@", @"ty-’pè", @"sŒm-ethįng"];
+    NSPredicate *booleanPredicate = [NSPredicate predicateWithFormat:@"%K != %@", @"cluster", [NSNumber numberWithBool:YES]];
     return @[equalPredicate,
              notEqualPredicate,
              greaterThanPredicate,
@@ -53,7 +54,8 @@
              inNotInPredicate,
              typePredicate,
              idPredicate,
-             specialCharsPredicate];
+             specialCharsPredicate,
+             booleanPredicate];
 }
 
 - (void)testAllPredicates