diff --git a/drivers/staging/epl/EplDllkCal.c b/drivers/staging/epl/EplDllkCal.c
index 88ce4b1145a1..0e283d5d0181 100644
--- a/drivers/staging/epl/EplDllkCal.c
+++ b/drivers/staging/epl/EplDllkCal.c
@@ -202,7 +202,7 @@ static tEplDllkCalInstance EplDllkCalInstance_g;
 //
 //---------------------------------------------------------------------------
 
-tEplKernel EplDllkCalAddInstance()
+tEplKernel EplDllkCalAddInstance(void)
 {
 	tEplKernel Ret = kEplSuccessful;
 #ifndef EPL_NO_FIFO
@@ -279,7 +279,7 @@ tEplKernel EplDllkCalAddInstance()
 //
 //---------------------------------------------------------------------------
 
-tEplKernel EplDllkCalDelInstance()
+tEplKernel EplDllkCalDelInstance(void)
 {
 	tEplKernel Ret = kEplSuccessful;
 #ifndef EPL_NO_FIFO
diff --git a/drivers/staging/epl/EplDlluCal.c b/drivers/staging/epl/EplDlluCal.c
index 06952985604d..f96fe84c4972 100644
--- a/drivers/staging/epl/EplDlluCal.c
+++ b/drivers/staging/epl/EplDlluCal.c
@@ -173,7 +173,7 @@ static tEplKernel EplDlluCalSetAsndServiceIdFilter(tEplDllAsndServiceId
 //
 //---------------------------------------------------------------------------
 
-tEplKernel EplDlluCalAddInstance()
+tEplKernel EplDlluCalAddInstance(void)
 {
 	tEplKernel Ret = kEplSuccessful;
 
@@ -198,7 +198,7 @@ tEplKernel EplDlluCalAddInstance()
 //
 //---------------------------------------------------------------------------
 
-tEplKernel EplDlluCalDelInstance()
+tEplKernel EplDlluCalDelInstance(void)
 {
 	tEplKernel Ret = kEplSuccessful;
 
diff --git a/drivers/staging/epl/EplNmtMnu.c b/drivers/staging/epl/EplNmtMnu.c
index 30a9f1ec73ed..a9ba55aec82c 100644
--- a/drivers/staging/epl/EplNmtMnu.c
+++ b/drivers/staging/epl/EplNmtMnu.c
@@ -378,7 +378,7 @@ tEplKernel EplNmtMnuAddInstance(tEplNmtMnuCbNodeEvent pfnCbNodeEvent_p,
 //
 //---------------------------------------------------------------------------
 
-tEplKernel EplNmtMnuDelInstance()
+tEplKernel EplNmtMnuDelInstance(void)
 {
 	tEplKernel Ret;