diff --git a/Makefile.pre.in b/Makefile.pre.in
index 4bc5a8c..4afa5ec 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -442,8 +442,9 @@
 # to the stripped DWARF data for the shared library.
 gdbhooks: $(BUILDPYTHON)-gdb.py
 
-$(BUILDPYTHON)-gdb.py: Tools/gdb/libpython.py
-	$(INSTALL_DATA) $< $(BUILDPYTHON)-gdb.py
+SRC_GDB_HOOKS=Tools/gdb/libpython.py
+$(BUILDPYTHON)-gdb.py: $(SRC_GDB_HOOKS)
+	$(INSTALL_DATA) $(SRC_GDB_HOOKS) $(BUILDPYTHON)-gdb.py
 
 # This rule is here for OPENSTEP/Rhapsody/MacOSX. It builds a temporary
 # minimal framework (not including the Lib directory and such) in the current