diff --git a/mozilla/modules/plugin/tools/sdk/samples/basic/windows/Makefile.in b/mozilla/modules/plugin/tools/sdk/samples/basic/windows/Makefile.in
index 6e3f76c73a8..0df1b8566e3 100644
--- a/mozilla/modules/plugin/tools/sdk/samples/basic/windows/Makefile.in
+++ b/mozilla/modules/plugin/tools/sdk/samples/basic/windows/Makefile.in
@@ -38,7 +38,7 @@ CPPSRCS = plugin.cpp
 
 SHARED_LIBRARY_LIBS = ../../common/plugingate_s.$(LIB_SUFFIX)
 
-DEFFILE = basic.def
+DEFFILE = $(srcdir)/basic.def
 RESFILE = basic.res
 
 include $(topsrcdir)/config/rules.mk
diff --git a/mozilla/modules/plugin/tools/sdk/samples/scriptable/windows/Makefile.in b/mozilla/modules/plugin/tools/sdk/samples/scriptable/windows/Makefile.in
index 69b4a8398a0..fff0fa1e323 100644
--- a/mozilla/modules/plugin/tools/sdk/samples/scriptable/windows/Makefile.in
+++ b/mozilla/modules/plugin/tools/sdk/samples/scriptable/windows/Makefile.in
@@ -43,14 +43,14 @@ XPIDLSRCS = nsIScriptablePluginSample.idl
 
 SHARED_LIBRARY_LIBS = ../../common/plugingate_s.$(LIB_SUFFIX)
 
-DEFFILE = npscriptable.def
+DEFFILE = $(srcdir)/npscriptable.def
 RESFILE = npscriptable.res
 
 include $(topsrcdir)/config/rules.mk
 
 DEFINES += -DMOZILLA_STRICT_API
 
-LOCAL_INCLUDES = -I$(srcdir)/$(XPIDL_GEN_DIR) \
+LOCAL_INCLUDES = -I./$(XPIDL_GEN_DIR) \
                  -I$(srcdir)/../../include \
                  -I$(srcdir)/../../../include \
                  $(NULL)
diff --git a/mozilla/modules/plugin/tools/sdk/samples/winless/windows/Makefile.in b/mozilla/modules/plugin/tools/sdk/samples/winless/windows/Makefile.in
index 55d8fcb7c2d..a38afae0bd8 100644
--- a/mozilla/modules/plugin/tools/sdk/samples/winless/windows/Makefile.in
+++ b/mozilla/modules/plugin/tools/sdk/samples/winless/windows/Makefile.in
@@ -38,7 +38,7 @@ CPPSRCS = plugin.cpp
 
 SHARED_LIBRARY_LIBS = ../../common/plugingate_s.$(LIB_SUFFIX)
 
-DEFFILE = npwinless.def
+DEFFILE = $(srcdir)/npwinless.def
 RESFILE = npwinless.res
 
 include $(topsrcdir)/config/rules.mk