diff --git a/Source/NSConnection.m b/Source/NSConnection.m
index 5075351e5..61c80ab93 100644
--- a/Source/NSConnection.m
+++ b/Source/NSConnection.m
@@ -2549,8 +2549,8 @@ static NSLock	*cached_proxies_gate = nil;
 
       if (debug_connection > 1)
       NSLog(
-	@"Handling message (sig %s) RMC %d from %@",
-	forward_type, seq, (uintptr_t)self);
+	@"Handling message (sig %s) RMC %d from %p",
+	forward_type, seq, self);
 
       IreqInCount++;	/* Handling an incoming request. */
 
diff --git a/Source/NSData.m b/Source/NSData.m
index 74dafaa28..54a915ded 100644
--- a/Source/NSData.m
+++ b/Source/NSData.m
@@ -1932,7 +1932,7 @@ failure:
           if (b == 0)
             {
               NSLog(@"[NSDataMalloc -initWithCoder:] unable to get %u bytes",
-                l);
+                (unsigned int)l);
               DESTROY(self);
               return nil;
             }
diff --git a/Source/NSKeyValueObserving.m b/Source/NSKeyValueObserving.m
index dd2406ae7..fbed5e654 100644
--- a/Source/NSKeyValueObserving.m
+++ b/Source/NSKeyValueObserving.m
@@ -573,7 +573,7 @@ replacementForClass(Class c)
 		}
 	      else
 		{
-		  NSLog(@"Failed to add setter method for %s to %@",
+		  NSLog(@"Failed to add setter method for %s to %s",
 		    sel_getName(sel), class_getName(original));
 		}
             }