diff --git a/src/IJ_mv/Makefile b/src/IJ_mv/Makefile
index 4a8feecc4..1707edfb2 100644
--- a/src/IJ_mv/Makefile
+++ b/src/IJ_mv/Makefile
@@ -68,7 +68,7 @@ install: libHYPRE_IJ_mv${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/parcsr_ls/Makefile b/src/parcsr_ls/Makefile
index 744f9d7c2..162a41060 100644
--- a/src/parcsr_ls/Makefile
+++ b/src/parcsr_ls/Makefile
@@ -179,7 +179,7 @@ install: libHYPRE_parcsr_ls${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/parcsr_mv/Makefile b/src/parcsr_mv/Makefile
index 1a9ee298a..1e39daea6 100644
--- a/src/parcsr_mv/Makefile
+++ b/src/parcsr_mv/Makefile
@@ -118,7 +118,7 @@ install: libHYPRE_parcsr_mv${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -f driver driver_matvec driver_matmul
 	rm -rf pchdir tca.map *inslog*
 
diff --git a/src/seq_mv/Makefile b/src/seq_mv/Makefile
index dc9171f5b..91eb9a1dc 100644
--- a/src/seq_mv/Makefile
+++ b/src/seq_mv/Makefile
@@ -75,7 +75,7 @@ install: libHYPRE_seq_mv${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/sstruct_ls/Makefile b/src/sstruct_ls/Makefile
index 5070d5179..babe16dac 100644
--- a/src/sstruct_ls/Makefile
+++ b/src/sstruct_ls/Makefile
@@ -125,7 +125,7 @@ install: libHYPRE_sstruct_ls${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/sstruct_mv/Makefile b/src/sstruct_mv/Makefile
index ab57d44a7..bbebe84bc 100644
--- a/src/sstruct_mv/Makefile
+++ b/src/sstruct_mv/Makefile
@@ -72,7 +72,7 @@ install: libHYPRE_sstruct_mv${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/struct_ls/Makefile b/src/struct_ls/Makefile
index a239f0f90..0b18764a9 100644
--- a/src/struct_ls/Makefile
+++ b/src/struct_ls/Makefile
@@ -117,7 +117,7 @@ install: libHYPRE_struct_ls${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/struct_mv/Makefile b/src/struct_mv/Makefile
index d69785861..6d1b4ebad 100644
--- a/src/struct_mv/Makefile
+++ b/src/struct_mv/Makefile
@@ -81,7 +81,7 @@ install: libHYPRE_struct_mv${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/test/Makefile b/src/test/Makefile
index f45123ed8..8922d0ab2 100644
--- a/src/test/Makefile
+++ b/src/test/Makefile
@@ -105,7 +105,7 @@ all++: ${HYPRE_DRIVER_CXX_EXECS}
 install:
 
 clean:
-	rm -f *.o*
+	rm -f *.o *.obj
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean
diff --git a/src/utilities/Makefile b/src/utilities/Makefile
index 281463154..8281d38f3 100644
--- a/src/utilities/Makefile
+++ b/src/utilities/Makefile
@@ -89,7 +89,7 @@ install: libHYPRE_utilities${HYPRE_LIB_SUFFIX}
 #	cp -fR libHYPRE* $(HYPRE_LIB_INSTALL)
 
 clean:
-	rm -f *.o* libHYPRE*
+	rm -f *.o *.obj libHYPRE*
 	rm -rf pchdir tca.map *inslog*
 
 distclean: clean