diff --git a/src/debug.cpp b/src/debug.cpp
index dc0085e9..a548365c 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -815,7 +815,7 @@ static void breakpoint(uint8 *opcode, uint16 A, int size) {
 						// TXS and TSX only deal with the pointer.
 						if (watchpoint[i].flags & stackop)
 						{
-							for (j = (stackopstartaddr|0x0100); j <= (stackopendaddr|0x0100); j++)
+							for (j = (stackopstartaddr|0x0100); j <= (static_cast<unsigned int>(stackopendaddr)|0x0100); j++)
 							{
 								if (watchpoint[i].endaddress)
 								{
@@ -859,7 +859,7 @@ static void breakpoint(uint8 *opcode, uint16 A, int size) {
 							// Pulls from stack
 							if (watchpoint[i].flags & WP_R)
 							{
-								for (j = (StackAddrBackup|0x0100); j < (X.S|0x0100); j++)
+								for (j = (StackAddrBackup|0x0100); j < (static_cast<unsigned int>(X.S)|0x0100); j++)
 								{
 									if (watchpoint[i].endaddress)
 									{
diff --git a/src/drivers/Qt/sdl-sound.cpp b/src/drivers/Qt/sdl-sound.cpp
index 99b3b495..83c3afb5 100644
--- a/src/drivers/Qt/sdl-sound.cpp
+++ b/src/drivers/Qt/sdl-sound.cpp
@@ -262,7 +262,7 @@ InitSound()
 	s_BufferSize = soundbufsize * soundrate / 1000;
 
 	// For safety, set a bare minimum:
-	if (s_BufferSize < spec.samples * 4)
+	if (s_BufferSize < static_cast<unsigned int>(spec.samples * 4))
 	{
 		s_BufferSize = spec.samples * 4;
 	}