diff --git a/Python/import.c b/Python/import.c
index adfd2cc..24df985 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1892,6 +1892,8 @@
         }
 
         for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) {
+            struct stat statbuf;
+
             filemode = fdp->mode;
             if (filemode[0] == 'U')
                 filemode = "r" PY_STDIOTEXTMODE;
@@ -1905,6 +1907,13 @@
             if (Py_VerboseFlag > 1)
                 PySys_FormatStderr("# trying %R\n", filename);
 
+            if (_Py_stat(filename, &statbuf) == 0 &&         /* it exists */
+                S_ISDIR(statbuf.st_mode))           /* it's a directory */
+            {
+                Py_DECREF(filename);
+                continue;
+            }
+
             fp = _Py_fopen(filename, filemode);
             if (fp == NULL) {
                 Py_DECREF(filename);