diff --git a/setup.py b/setup.py
index 2d38426e9..0d5c18d4c 100644
--- a/setup.py
+++ b/setup.py
@@ -45,8 +45,9 @@ def determine_opencc_version():
         gcc_version = None
 
     # determine opencc version
-    if gcc_version and gcc_version.startswith("9."):
-        return "opencc==1.1.6"  # GCC 9 need opencc==1.1.6
+    if gcc_version:
+        if int(gcc_version.split(".")[0]) <= 9:
+            return "opencc==1.1.6"  # GCC<=9 need opencc==1.1.6
     return "opencc"  # default