diff --git a/timm/models/layers/patch_embed.py b/timm/models/layers/patch_embed.py
index b0b759c7..41528efa 100644
--- a/timm/models/layers/patch_embed.py
+++ b/timm/models/layers/patch_embed.py
@@ -30,8 +30,8 @@ class PatchEmbed(nn.Module):
 
     def forward(self, x):
         B, C, H, W = x.shape
-        torch._assert(H == self.img_size[0], f"Input image height ({H}) doesn't match model {self.img_size[0]}.")
-        torch._assert(W == self.img_size[1], f"Input image width ({W}) doesn't match model ({self.img_size[1]}.")
+        torch._assert(H == self.img_size[0], f"Input image height ({H}) doesn't match model ({self.img_size[0]}).")
+        torch._assert(W == self.img_size[1], f"Input image width ({W}) doesn't match model ({self.img_size[1]}).")
         x = self.proj(x)
         if self.flatten:
             x = x.flatten(2).transpose(1, 2)  # BCHW -> BNC