diff --git a/apps/calc/Makefile.calc b/apps/calc/Makefile.calc
index 6c526e643..d75e6a413 100644
--- a/apps/calc/Makefile.calc
+++ b/apps/calc/Makefile.calc
@@ -1,2 +1,2 @@
-calc_src += calc.c
-calc_dsc += calc-dsc.c
+calc_src = calc.c
+calc_dsc = calc-dsc.c
diff --git a/apps/cmdd/Makefile.cmdd b/apps/cmdd/Makefile.cmdd
index a4817f267..99d3eb130 100644
--- a/apps/cmdd/Makefile.cmdd
+++ b/apps/cmdd/Makefile.cmdd
@@ -1,2 +1 @@
 cmdd_src = cmdd.c
-cmdd_dsc =
diff --git a/apps/deluge/Makefile.deluge b/apps/deluge/Makefile.deluge
index 9cb02423d..abadf18d0 100644
--- a/apps/deluge/Makefile.deluge
+++ b/apps/deluge/Makefile.deluge
@@ -1 +1 @@
-deluge_src += deluge.c
+deluge_src = deluge.c
diff --git a/apps/program-handler/Makefile.program-handler b/apps/program-handler/Makefile.program-handler
index 81f69b00e..679ba49fc 100644
--- a/apps/program-handler/Makefile.program-handler
+++ b/apps/program-handler/Makefile.program-handler
@@ -1,2 +1,2 @@
 program-handler_src = program-handler.c
-program-handler_dsc =
+