diff --git a/modules/python/src2/gen2.py b/modules/python/src2/gen2.py
index cf60ea9785..55a79484ce 100755
--- a/modules/python/src2/gen2.py
+++ b/modules/python/src2/gen2.py
@@ -861,7 +861,7 @@ class PythonWrapperGenerator(object):
             decls = self.parser.parse(hdr)
             if len(decls) == 0:
                 continue
-            self.code_include.write( '#include "{}"\n'.format(hdr[hdr.rindex('opencv2/'):]) )
+            self.code_include.write( '#include "{0}"\n'.format(hdr[hdr.rindex('opencv2/'):]) )
             for decl in decls:
                 name = decl[0]
                 if name.startswith("struct") or name.startswith("class"):