diff --git a/src/osx/cocoa/colour.mm b/src/osx/cocoa/colour.mm
index 31515d146f..86b33e94a2 100644
--- a/src/osx/cocoa/colour.mm
+++ b/src/osx/cocoa/colour.mm
@@ -125,3 +125,3 @@
     wxOSXEffectiveAppearanceSetter helper;
-    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpaceName:NSCalibratedRGBColorSpace] )
+    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpace:[NSColorSpace sRGBColorSpace]] )
         return [colRGBA redComponent];
@@ -134,3 +134,3 @@
     wxOSXEffectiveAppearanceSetter helper;
-    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpaceName:NSCalibratedRGBColorSpace] )
+    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpace:[NSColorSpace sRGBColorSpace]] )
         return [colRGBA greenComponent];
@@ -143,3 +143,3 @@
     wxOSXEffectiveAppearanceSetter helper;
-    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpaceName:NSCalibratedRGBColorSpace] )
+    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpace:[NSColorSpace sRGBColorSpace]] )
         return [colRGBA blueComponent];
@@ -152,3 +152,3 @@
     wxOSXEffectiveAppearanceSetter helper;
-    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpaceName:NSCalibratedRGBColorSpace] )
+    if ( NSColor* colRGBA = [m_nsColour colorUsingColorSpace:[NSColorSpace sRGBColorSpace]] )
         return [colRGBA alphaComponent];
@@ -160,3 +160,3 @@
 {
-    return [m_nsColour colorUsingColorSpaceName:NSCalibratedRGBColorSpace] != nil;
+    return [m_nsColour colorUsingColorSpace:[NSColorSpace sRGBColorSpace]] != nil;
 }