diff --git a/epoch1d/Makefile b/epoch1d/Makefile
index 2a53d7dcd..cbd55c630 100644
--- a/epoch1d/Makefile
+++ b/epoch1d/Makefile
@@ -420,11 +420,11 @@ visitclean:
 
 sdfutils:
 	@cd $(SDF)/../C; make
-	@cd $(SDF)/../utilities; ./build
+	@cd $(SDF)/../utilities; ./build.sh
 
 sdfutilsclean:
 	@cd $(SDF)/../C; make clean
-	@cd $(SDF)/../utilities; ./build -c
+	@cd $(SDF)/../utilities; ./build.sh -c
 
 sdf_reader_example: $(BINDIR)/sdf_reader_example
 
diff --git a/epoch2d/Makefile b/epoch2d/Makefile
index 208fee85f..8e57b9af4 100644
--- a/epoch2d/Makefile
+++ b/epoch2d/Makefile
@@ -420,11 +420,11 @@ visitclean:
 
 sdfutils:
 	@cd $(SDF)/../C; make
-	@cd $(SDF)/../utilities; ./build
+	@cd $(SDF)/../utilities; ./build.sh
 
 sdfutilsclean:
 	@cd $(SDF)/../C; make clean
-	@cd $(SDF)/../utilities; ./build -c
+	@cd $(SDF)/../utilities; ./build.sh -c
 
 sdf_reader_example: $(BINDIR)/sdf_reader_example
 
diff --git a/epoch3d/Makefile b/epoch3d/Makefile
index a55f82309..f54b60bf2 100644
--- a/epoch3d/Makefile
+++ b/epoch3d/Makefile
@@ -420,11 +420,11 @@ visitclean:
 
 sdfutils:
 	@cd $(SDF)/../C; make
-	@cd $(SDF)/../utilities; ./build
+	@cd $(SDF)/../utilities; ./build.sh
 
 sdfutilsclean:
 	@cd $(SDF)/../C; make clean
-	@cd $(SDF)/../utilities; ./build -c
+	@cd $(SDF)/../utilities; ./build.sh -c
 
 sdf_reader_example: $(BINDIR)/sdf_reader_example