diff --git a/src/zapit/src/zapit.cpp b/src/zapit/src/zapit.cpp
index 7f7d2e68f..45253ce43 100644
--- a/src/zapit/src/zapit.cpp
+++ b/src/zapit/src/zapit.cpp
@@ -2594,7 +2594,7 @@ bool CZapit::Start(Z_start_arg *ZapStart_arg)
 	}
 
 	// set ci clock to ZapStart_arg->ci_clock
-	for (int i = 0; i < ca->GetNumberCISlots(); i++) {
+	for (unsigned int i = 0; i < ca->GetNumberCISlots(); i++) {
 		ca->SetTSClock(ZapStart_arg->ci_clock[i] * 1000000);
 	}
 
@@ -2603,7 +2603,7 @@ bool CZapit::Start(Z_start_arg *ZapStart_arg)
 	ca->SetCIDelay(ZapStart_arg->ci_delay);
 
 	/// relevant pids routing
-	for (int i = 0; i < ca->GetNumberCISlots(); i++) {
+	for (unsigned int i = 0; i < ca->GetNumberCISlots(); i++) {
 		ca->SetCIRelevantPidsRouting(ZapStart_arg->ci_rpr[i]);
 	}
 #endif