diff --git a/src/synthdata.cpp b/src/synthdata.cpp
index 4ad64b3..49e7f95 100644
--- a/src/synthdata.cpp
+++ b/src/synthdata.cpp
@@ -512,6 +512,7 @@ void LoadConfig(void)
 			}
 		}
 	}
+	fclose(f);
 }  //  end of LoadConfig
 
 
