diff --git a/core/math/math.odin b/core/math/math.odin
index 583da00d0..4b011524d 100644
--- a/core/math/math.odin
+++ b/core/math/math.odin
@@ -469,7 +469,7 @@ classify_f32 :: proc(x: f32) -> Float_Class {
 			return .Neg_Inf;
 		}
 		return .Inf;
-	case x != x:
+	case !(x == x):
 		return .NaN;
 	}
 
@@ -493,7 +493,7 @@ classify_f64 :: proc(x: f64) -> Float_Class {
 			return .Neg_Inf;
 		}
 		return .Inf;
-	case x != x:
+	case !(x == x):
 		return .NaN;
 	}
 	u := transmute(u64)x;