--- old/src/java.desktop/macosx/native/libsplashscreen/splashscreen_sys.m	2016-10-06 06:03:29.000000000 +0300
+++ new/src/java.desktop/macosx/native/libsplashscreen/splashscreen_sys.m	2016-10-06 06:03:29.000000000 +0300
@@ -158,7 +158,7 @@
                                         options:NSBackwardsSearch];
         NSUInteger dotIndex = range.location;
         NSString *fileName2x = nil;
-        
+
         if (dotIndex == NSNotFound) {
             fileName2x = [fileName stringByAppendingString: @"@2x"];
         } else {
@@ -167,7 +167,7 @@
             fileName2x = [fileName2x stringByAppendingString:
                           [fileName substringFromIndex: dotIndex]];
         }
-        
+
         if ((fileName2x != nil) && (jar || [[NSFileManager defaultManager]
                     fileExistsAtPath: fileName2x])){
             if (strlen([fileName2x UTF8String]) > scaledImageLength) {
@@ -190,7 +190,7 @@
 
     splash->maskRequired = 0;
 
-    
+
     //TODO: the following is too much of a hack but should work in 90% cases.
     //      besides we don't use device-dependant drawing, so probably
     //      that's very fine indeed
@@ -229,7 +229,9 @@
 
 void
 SplashLock(Splash * splash) {
-    pthread_mutex_lock(&splash->lock);
+    [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
+        pthread_mutex_lock(&splash->lock);
+    }];
 }
 
 void
@@ -286,7 +288,7 @@
             size.height /= scaleFactor;
             [image setSize: size];
         }
-        
+
         NSImageView * view = [[NSImageView alloc] init];
 
         [view setImage: image];