diff --git a/backbone/efficientnet.py b/backbone/efficientnet.py
index bf79dcd..4096539 100644
--- a/backbone/efficientnet.py
+++ b/backbone/efficientnet.py
@@ -387,7 +387,7 @@ def efficientnet(input_size, embedding_size=512, version='b1', **kwargs):
     elif version == "b4":
         in_size = (190, 190)
         depth_factor = 1.8
-        width_factor = 1.4
+        width_factor = 1.5
         dropout_rate = 0.4
     elif version == "b5":
         in_size = (228, 228)
@@ -455,4 +455,4 @@ def efficientnet(input_size, embedding_size=512, version='b1', **kwargs):
         embedding_size=embedding_size,
         **kwargs)
 
-    return net
\ No newline at end of file
+    return net