diff --git a/src/ptserver/Makefile.in b/src/ptserver/Makefile.in
index aab2feef3d..00e6bc2df7 100644
--- a/src/ptserver/Makefile.in
+++ b/src/ptserver/Makefile.in
@@ -98,10 +98,10 @@ ptserver.o: ptserver.c ${INCLS} AFS_component_version_number.c
 # When supergroups is enabled, some parts of ptserver cast between
 # incompatible structs.
 ptutils.o: ptutils.c ${INCLS}
-	$(CCOBJ) $(CFLAGS) @CFLAGS_NOSTRICT@ -c ptutils.c
+	$(CCOBJ) $(CFLAGS) @CFLAGS_NOSTRICT@ -c ${srcdir}/ptutils.c
 
 ptprocs.o: ptprocs.c ${INCLS}
-	$(CCOBJ) $(CFLAGS) @CFLAGS_NOSTRICT@ -c ptprocs.c
+	$(CCOBJ) $(CFLAGS) @CFLAGS_NOSTRICT@ -c ${srcdir}/ptprocs.c
 
 utils.o: utils.c ${INCLS}