diff --git a/src/osd/modules/debugger/osx/debugview.mm b/src/osd/modules/debugger/osx/debugview.mm
index 409bbeadceb..f4a7c8cd2cb 100644
--- a/src/osd/modules/debugger/osx/debugview.mm
+++ b/src/osd/modules/debugger/osx/debugview.mm
@@ -583,7 +583,7 @@ static void debugwin_view_update(debug_view &view, void *osdprivate)
 	if (wholeLineScroll)
 	{
 		CGFloat const clamp = [self bounds].size.height - fontHeight - proposedVisibleRect.size.height;
-		proposedVisibleRect.origin.y = std::min(proposedVisibleRect.origin.y, std::max(clamp, 0));
+		proposedVisibleRect.origin.y = std::min((int)proposedVisibleRect.origin.y, std::max((int)clamp, 0));
 		proposedVisibleRect.origin.y -= fmod(proposedVisibleRect.origin.y, fontHeight);
 	}
 	return proposedVisibleRect;
@@ -668,7 +668,7 @@ static void debugwin_view_update(debug_view &view, void *osdprivate)
 											  inTextContainer:textContainer];
 		if (start == 0)
 			box.origin.x = 0;
-		box.size.width = std::max([self bounds].size.width - box.origin.x, 0);
+		box.size.width = std::max((int)([self bounds].size.width - box.origin.x), 0);
 		[[self backgroundForAttribute:attr] set];
 		[NSBezierPath fillRect:NSMakeRect(box.origin.x,
 										  row * fontHeight,
diff --git a/src/osd/modules/debugger/osx/debugwindowhandler.mm b/src/osd/modules/debugger/osx/debugwindowhandler.mm
index a4cd46df631..18c17a3aef0 100644
--- a/src/osd/modules/debugger/osx/debugwindowhandler.mm
+++ b/src/osd/modules/debugger/osx/debugwindowhandler.mm
@@ -350,7 +350,7 @@ NSString *const MAMEAuxiliaryDebugWindowWillCloseNotification = @"MAMEAuxiliaryD
 	windowFrame.size.height = std::min(windowFrame.size.height, available.size.height);
 
 	// arbitrary additional height limit
-	windowFrame.size.height = std::min(windowFrame.size.height, 320);
+	windowFrame.size.height = std::min((int)windowFrame.size.height, 320);
 
 	// place it in the bottom right corner and apply
 	windowFrame.origin.x = available.origin.x + available.size.width - windowFrame.size.width;
diff --git a/src/osd/modules/debugger/osx/errorlogviewer.mm b/src/osd/modules/debugger/osx/errorlogviewer.mm
index 087694ca81b..cf8d7936c6b 100644
--- a/src/osd/modules/debugger/osx/errorlogviewer.mm
+++ b/src/osd/modules/debugger/osx/errorlogviewer.mm
@@ -44,7 +44,7 @@
 													 borderType:[logScroll borderType]];
 
 		// this thing starts with no content, so its prefered height may be very small
-		desired.height = std::max(desired.height, 240);
+		desired.height = std::max((int)desired.height, 240);
 		[self cascadeWindowWithDesiredSize:desired forView:logScroll];
 	}
 
diff --git a/src/osd/modules/sound/coreaudio_sound.cpp b/src/osd/modules/sound/coreaudio_sound.cpp
index 1f03939de45..e445dc27059 100644
--- a/src/osd/modules/sound/coreaudio_sound.cpp
+++ b/src/osd/modules/sound/coreaudio_sound.cpp
@@ -81,7 +81,7 @@ private:
 		EFFECT_COUNT_MAX = 10
 	};
 
-	UINT32 clamped_latency() const { return std::max(std::min(m_audio_latency, LATENCY_MAX), LATENCY_MIN); }
+	UINT32 clamped_latency() const { return std::max(std::min(UINT32(m_audio_latency), UINT32(LATENCY_MAX)), UINT32(LATENCY_MIN)); }
 	UINT32 buffer_avail() const { return ((m_writepos >= m_playpos) ? m_buffer_size : 0) + m_playpos - m_writepos; }
 	UINT32 buffer_used() const { return ((m_playpos > m_writepos) ? m_buffer_size : 0) + m_writepos - m_playpos; }
 
@@ -228,7 +228,7 @@ int sound_coreaudio::init(const osd_options &options)
 
 	// Allocate buffer
 	m_headroom = m_sample_bytes * (clamped_latency() * sample_rate() / 40);
-	m_buffer_size = m_sample_bytes * std::max(sample_rate() * (clamped_latency() + 3) / 40, 256);
+	m_buffer_size = m_sample_bytes * std::max(UINT32(sample_rate() * (clamped_latency() + 3) / 40), 256U);
 	m_buffer = global_alloc_array_clear<INT8>(m_buffer_size);
 	if (!m_buffer)
 	{