diff --git a/Examples/Makefile.in b/Examples/Makefile.in
index c0c524d35..ec3c64429 100644
--- a/Examples/Makefile.in
+++ b/Examples/Makefile.in
@@ -1029,20 +1029,19 @@ uffi_clean:
 ##################################################################
 
 R = R
-RSRCS = $(INTERFACE:.i=_wrap.c) #special code for R build system
-RCXXSRCS = $(INTERFACE:.i=_wrap.cpp) #special code for R build system
+RCXXSRCS = $(INTERFACE:.i=_wrap.cpp) #Need to use _wrap.cpp for R build system as it does not understand _wrap.cxx
 RRSRC = $(INTERFACE:.i=.R)
 
 r: $(SRCS)
-	$(SWIG) -r $(SWIGOPT)  -o $(RSRCS) $(INTERFACE)
-	+( PKG_LIBS="$(SRCS)" PKG_CPPFLAGS="$(INCLUDES)" $(R) CMD SHLIB -o $(LIBPREFIX)$(TARGET)$(SO) $(RSRCS) )
+	$(SWIG) -r $(SWIGOPT) $(INTERFACE)
+	+( PKG_LIBS="$(SRCS)" PKG_CPPFLAGS="$(INCLUDES)" $(R) CMD SHLIB -o $(LIBPREFIX)$(TARGET)$(SO) $(ISRCS) )
 
 r_cpp: $(CXXSRCS)
 	$(SWIG) -c++ -r $(SWIGOPT) -o $(RCXXSRCS) $(INTERFACE)
 	+( PKG_LIBS="$(CXXSRCS)" PKG_CPPFLAGS="$(INCLUDES)" $(R) CMD SHLIB -o $(LIBPREFIX)$(TARGET)$(SO) $(RCXXSRCS) )
 
 r_clean:
-	rm -f *_wrap* *~ .~* $(RSRCS) $(RCXXSRCS)
+	rm -f *_wrap* *~ .~*
 	rm -f core @EXTRA_CLEAN@
 	rm -f *.@OBJEXT@ *@SO@ NAMESPACE
 	rm -f $(RRSRC) runme.Rout .RData