diff --git a/xpcom/tests/dynamic/Makefile b/xpcom/tests/dynamic/Makefile
index e0b9b26fac9f..5c5e2687b687 100644
--- a/xpcom/tests/dynamic/Makefile
+++ b/xpcom/tests/dynamic/Makefile
@@ -19,7 +19,7 @@ DEPTH = ../../..
 
 LIBRARY_NAME = testdynamic
 
-LOCAL_INCLUDES = -I.. -I../../src
+LOCAL_INCLUDES = -I.. -I../../public
 
 CPPSRCS = \
 	TestDynamic.cpp	\
diff --git a/xpcom/tests/dynamic/makefile.win b/xpcom/tests/dynamic/makefile.win
index 0236eb276d5b..b750d5b39be6 100644
--- a/xpcom/tests/dynamic/makefile.win
+++ b/xpcom/tests/dynamic/makefile.win
@@ -23,7 +23,7 @@ MAKE_OBJ_TYPE = DLL
 
 DLL = $(OBJDIR)\TestDynamic.dll
 
-LINCS = -I.. -I../../src
+LINCS = -I.. -I../../public
 
 LLIBS=				\
  $(DIST)\lib\xpcom32.lib	\
diff --git a/xpcom/tests/services/makefile.win b/xpcom/tests/services/makefile.win
index 03a3ec808dc4..48c337bb539e 100644
--- a/xpcom/tests/services/makefile.win
+++ b/xpcom/tests/services/makefile.win
@@ -23,7 +23,7 @@ MAKE_OBJ_TYPE = DLL
 
 DLL = $(OBJDIR)\MyService.dll
 
-LINCS = -I.. -I../../src
+LINCS = -I.. -I../../public
 
 LLIBS=				\
  $(DIST)\lib\xpcom32.lib	\
diff --git a/xpcom/tests/windows/makefile.win b/xpcom/tests/windows/makefile.win
index 8ba154c63284..ae11e011584c 100644
--- a/xpcom/tests/windows/makefile.win
+++ b/xpcom/tests/windows/makefile.win
@@ -23,7 +23,7 @@ MAKE_OBJ_TYPE	= EXE
 PROG1 = .\$(OBJDIR)\TestCOM.exe
 PROGRAMS = $(PROG1) $(PROG2)
 
-LINCS=-I..\..\src
+LINCS=-I..\..\public
 
 LLIBS=					\
  rpcrt4.lib				\