diff --git a/libs/model3d/build.zig b/libs/model3d/build.zig
index 1488f0a5..23480be6 100644
--- a/libs/model3d/build.zig
+++ b/libs/model3d/build.zig
@@ -23,7 +23,7 @@ pub fn testStep(b: *std.build.Builder, mode: std.builtin.Mode, target: std.zig.C
 
 pub fn link(b: *std.build.Builder, step: *std.build.LibExeObjStep) void {
     const lib = b.addStaticLibrarySource("model3d", null);
-    lib.addCSourceFile(sdkPath("/src/c/m3d.c"), &.{ "-std=c89", "-DM3D_ASCII" });
+    lib.addCSourceFile(sdkPath("/src/c/m3d.c"), &.{ "-std=c89" });
     lib.linkLibC();
     step.addIncludePath(sdkPath("/src/c/"));
     step.linkLibrary(lib);
diff --git a/libs/model3d/src/c/m3d.h b/libs/model3d/src/c/m3d.h
index 3b29927d..2bbb5c4d 100644
--- a/libs/model3d/src/c/m3d.h
+++ b/libs/model3d/src/c/m3d.h
@@ -2377,6 +2377,7 @@ static M3D_FLOAT _m3d_rsq(M3D_FLOAT x)
 /**
  * Function to decode a Model 3D into in-memory format
  */
+__attribute__((no_sanitize("alignment"))) // TODO(model3d): https://gitlab.com/bztsrc/model3d/-/issues/19
 m3d_t *m3d_load(unsigned char *data, m3dread_t readfilecb, m3dfree_t freecb, m3d_t *mtllib)
 {
     unsigned char *end, *chunk, *buff, weights[8];