diff --git a/simgear/timing/timezone.cxx b/simgear/timing/timezone.cxx
index 60ef96de..f052032a 100644
--- a/simgear/timing/timezone.cxx
+++ b/simgear/timing/timezone.cxx
@@ -151,6 +151,7 @@ SGTimeZoneContainer::SGTimeZoneContainer(const char *filename)
             errno = 0;
         }
     }
+    fclose(infile);
 }
 
 SGTimeZoneContainer::~SGTimeZoneContainer()