diff --git a/zig-ecs/src/ecs/entity.zig b/zig-ecs/src/ecs/entity.zig
index 2679232..076fe9d 100644
--- a/zig-ecs/src/ecs/entity.zig
+++ b/zig-ecs/src/ecs/entity.zig
@@ -14,9 +14,9 @@ pub fn EntityTraitsType(comptime size: EntityTraitsSize) type {
 }
 
 fn EntityTraitsDefinition(comptime EntityType: type, comptime IndexType: type, comptime VersionType: type) type {
-    std.debug.assert(@typeInfo(EntityType) == .Int and !@typeInfo(EntityType).Int.is_signed);
-    std.debug.assert(@typeInfo(IndexType) == .Int and !@typeInfo(IndexType).Int.is_signed);
-    std.debug.assert(@typeInfo(VersionType) == .Int and !@typeInfo(VersionType).Int.is_signed);
+    std.debug.assert(@typeInfo(EntityType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(EntityType)) == EntityType);
+    std.debug.assert(@typeInfo(IndexType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(IndexType)) == IndexType);
+    std.debug.assert(@typeInfo(VersionType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(VersionType)) == VersionType);
 
     if (@bitSizeOf(IndexType) + @bitSizeOf(VersionType) != @bitSizeOf(EntityType))
         @compileError("IndexType and VersionType must sum to EntityType's bit count");
diff --git a/zig-ecs/src/ecs/handles.zig b/zig-ecs/src/ecs/handles.zig
index d769087..452c974 100644
--- a/zig-ecs/src/ecs/handles.zig
+++ b/zig-ecs/src/ecs/handles.zig
@@ -4,9 +4,9 @@ const std = @import("std");
 /// you choose the type of the handle (aka its size) and how much of that goes to the index and the version.
 /// the bitsize of version + id must equal the handle size.
 pub fn Handles(comptime HandleType: type, comptime IndexType: type, comptime VersionType: type) type {
-    std.debug.assert(@typeInfo(HandleType) == .Int and !@typeInfo(HandleType).Int.is_signed);
-    std.debug.assert(@typeInfo(IndexType) == .Int and !@typeInfo(IndexType).Int.is_signed);
-    std.debug.assert(@typeInfo(VersionType) == .Int and !@typeInfo(VersionType).Int.is_signed);
+    std.debug.assert(@typeInfo(HandleType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(HandleType)) == HandleType);
+    std.debug.assert(@typeInfo(IndexType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(IndexType)) == IndexType);
+    std.debug.assert(@typeInfo(VersionType) == .Int and std.meta.Int(.unsigned, @bitSizeOf(VersionType)) == VersionType);
 
     if (@bitSizeOf(IndexType) + @bitSizeOf(VersionType) != @bitSizeOf(HandleType))
         @compileError("IndexType and VersionType must sum to HandleType's bit count");