diff --git a/src/mod/applications/mod_expr/Makefile b/src/mod/applications/mod_expr/Makefile
index 261b4c6c7e..3be4aaa718 100644
--- a/src/mod/applications/mod_expr/Makefile
+++ b/src/mod/applications/mod_expr/Makefile
@@ -1,6 +1,6 @@
 BASE=../../../..
-LOCAL_SOURCES=expreval.c exprinit.c exprobj.c exprutil.c exprfunc.c exprmem.c exprpars.c exprval.c
-LOCAL_OBJS=expreval.o exprinit.o exprobj.o exprutil.o exprfunc.o exprmem.o exprpars.o exprval.o
+LOCAL_SOURCES=$(MODDIR)/expreval.c $(MODDIR)/exprinit.c $(MODDIR)/exprobj.c $(MODDIR)/exprutil.c $(MODDIR)/exprfunc.c $(MODDIR)/exprmem.c $(MODDIR)/exprpars.c $(MODDIR)/exprval.c
+LOCAL_OBJS=$(MODDIR)/expreval.o $(MODDIR)/exprinit.o $(MODDIR)/exprobj.o $(MODDIR)/exprutil.o $(MODDIR)/exprfunc.o $(MODDIR)/exprmem.o $(MODDIR)/exprpars.o $(MODDIR)/exprval.o
 LOCAL_LDFLAGS=-lm
 include $(BASE)/build/modmake.rules