diff --git a/packages/cjit/src/types.zig b/packages/cjit/src/types.zig
index 26dd4fc..996e2e3 100644
--- a/packages/cjit/src/types.zig
+++ b/packages/cjit/src/types.zig
@@ -175,9 +175,9 @@ pub fn isCompatible(comptime ZigType: type, c_type: Type) bool {
             else => false,
         },
         .float => |zig_float| switch (c_type) {
-            .float => zig_float.bits = 32,
-            .double => zig_float.bits = 64,
-            .long_double => zig_float.bits = 64,
+            .float => zig_float.bits == 32,
+            .double => zig_float.bits == 64,
+            .long_double => zig_float.bits == 64,
         },
         .pointer => @compileError("TODO"),
         .array => @compileError("TODO"),