diff --git a/samples/calendar/makefile.g95 b/samples/calendar/makefile.g95
index 82ac2e3311..2970a1a73e 100644
--- a/samples/calendar/makefile.g95
+++ b/samples/calendar/makefile.g95
@@ -6,5 +6,5 @@ WXDIR = ../..
 TARGET=calendar
 OBJECTS = $(TARGET).o
 
-include $(WXDIR)\src\makeprog.g95
+include $(WXDIR)/src/makeprog.g95
 
diff --git a/samples/dialup/makefile.g95 b/samples/dialup/makefile.g95
index 9b0d993bc5..5d8e2a2173 100644
--- a/samples/dialup/makefile.g95
+++ b/samples/dialup/makefile.g95
@@ -12,5 +12,5 @@ WXDIR = ../..
 TARGET=nettest
 OBJECTS = $(TARGET).o
 
-include $(WXDIR)\src\makeprog.g95
+include $(WXDIR)/src/makeprog.g95
 
diff --git a/samples/menu/makefile.g95 b/samples/menu/makefile.g95
index 554be77f07..ad4b06c3c3 100644
--- a/samples/menu/makefile.g95
+++ b/samples/menu/makefile.g95
@@ -12,5 +12,5 @@ WXDIR = ../..
 TARGET=menu
 OBJECTS = $(TARGET).o
 
-include $(WXDIR)\src\makeprog.g95
+include $(WXDIR)/src/makeprog.g95
 
diff --git a/samples/minimal/makefile.g95 b/samples/minimal/makefile.g95
index c507764741..f030c04367 100644
--- a/samples/minimal/makefile.g95
+++ b/samples/minimal/makefile.g95
@@ -12,5 +12,5 @@ WXDIR = ../..
 TARGET=minimal
 OBJECTS = $(TARGET).o
 
-include $(WXDIR)\src\makeprog.g95
+include $(WXDIR)/src/makeprog.g95
 
diff --git a/samples/newgrid/makefile.g95 b/samples/newgrid/makefile.g95
index f80b1e1e99..b81d8cc55c 100644
--- a/samples/newgrid/makefile.g95
+++ b/samples/newgrid/makefile.g95
@@ -11,5 +11,5 @@ WXDIR = ../..
 TARGET=griddemo
 OBJECTS = $(TARGET).o
 
-include $(WXDIR)\src\makeprog.g95
+include $(WXDIR)/src/makeprog.g95