diff --git a/BipartiteGraphPartialColoring/BipartiteGraphPartialColoring.cpp b/BipartiteGraphPartialColoring/BipartiteGraphPartialColoring.cpp
index 81e3c81..8a8f762 100755
--- a/BipartiteGraphPartialColoring/BipartiteGraphPartialColoring.cpp
+++ b/BipartiteGraphPartialColoring/BipartiteGraphPartialColoring.cpp
@@ -564,6 +564,7 @@ namespace ColPack
 
 		}
 
+		return ( _TRUE );
 	}
 
 	//Public Function 2456
diff --git a/BipartiteGraphPartialColoring/BipartiteGraphPartialOrdering.cpp b/BipartiteGraphPartialColoring/BipartiteGraphPartialOrdering.cpp
index f6adb58..b90f5b6 100644
--- a/BipartiteGraphPartialColoring/BipartiteGraphPartialOrdering.cpp
+++ b/BipartiteGraphPartialColoring/BipartiteGraphPartialOrdering.cpp
@@ -537,6 +537,7 @@ namespace ColPack
 			}
 		}
 		cout<<"OUT ROW_SMALLEST_LAST_OMP()"<<endl<<flush;
+		return(_TRUE);
 	}
 
 	//Public Function 2359
@@ -926,6 +927,7 @@ namespace ColPack
 			}
 		}
 		cout<<"OUT COLUMN_SMALLEST_LAST_OMP()"<<endl<<flush;
+		return(_TRUE);
 	}
 
 
diff --git a/Utilities/extra.cpp b/Utilities/extra.cpp
index 3228b08..078b6a5 100755
--- a/Utilities/extra.cpp
+++ b/Utilities/extra.cpp
@@ -262,6 +262,7 @@ int displayGraph(ColPack::GraphColoring &g) {
   //command="xdot -f fdp ";
   command = command + fileName;
   system(command.c_str());
+  return(_TRUE);
 }
 
 int buildDotWithoutColor(ColPack::GraphColoring &g, vector<string> &ListOfColors, string fileName) {