diff --git a/Transmission.xcodeproj/project.pbxproj b/Transmission.xcodeproj/project.pbxproj
index dfce100ac..d8e55acc9 100644
--- a/Transmission.xcodeproj/project.pbxproj
+++ b/Transmission.xcodeproj/project.pbxproj
@@ -1806,9 +1806,10 @@
 				GCC_WARN_UNUSED_FUNCTION = NO;
 				GCC_WARN_UNUSED_VALUE = NO;
 				GCC_WARN_UNUSED_VARIABLE = NO;
+				MACOSX_DEPLOYMENT_TARGET = 10.4;
 				OTHER_CFLAGS = "$(inherited)";
 				PREBINDING = NO;
-				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
 			};
 			name = Development;
 		};
@@ -1858,8 +1859,9 @@
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
+				MACOSX_DEPLOYMENT_TARGET = 10.4;
 				PREBINDING = NO;
-				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
 			};
 			name = Release;
 		};
diff --git a/macosx/InfoWindowController.m b/macosx/InfoWindowController.m
index 461535fb2..dd87e8e04 100644
--- a/macosx/InfoWindowController.m
+++ b/macosx/InfoWindowController.m
@@ -181,8 +181,8 @@ typedef enum
     {
         if (numberSelected > 0)
         {
-            [fImageView setImage: [NSImage imageNamed: /*[NSApp isOnLeopardOrBetter]
-                                    ? NSImageNameMultipleDocuments :*/ @"NSApplicationIcon"]];
+            [fImageView setImage: [NSImage imageNamed: [NSApp isOnLeopardOrBetter]
+                                    ? NSImageNameMultipleDocuments : @"NSApplicationIcon"]];
             
             [fNameField setStringValue: [NSString stringWithFormat: NSLocalizedString(@"%d Torrents Selected",
                                             "Inspector -> above tabs -> selected torrents"), numberSelected]];
diff --git a/macosx/NSApplicationAdditions.m b/macosx/NSApplicationAdditions.m
index bcaab6d85..373ce7575 100644
--- a/macosx/NSApplicationAdditions.m
+++ b/macosx/NSApplicationAdditions.m
@@ -24,10 +24,6 @@
 
 #import "NSApplicationAdditions.h"
 
-#ifndef NSAppKitVersionNumber10_4 
-#define NSAppKitVersionNumber10_4 824 
-#endif
-
 @implementation NSApplication (NSApplicationAdditions)
 
 - (BOOL) isOnLeopardOrBetter