diff --git a/Framework_DataProvider/Sources/SRGMediaPlayerController+SRGAnalytics_DataProvider.m b/Framework_DataProvider/Sources/SRGMediaPlayerController+SRGAnalytics_DataProvider.m
index 964f4e2d..757c6201 100644
--- a/Framework_DataProvider/Sources/SRGMediaPlayerController+SRGAnalytics_DataProvider.m
+++ b/Framework_DataProvider/Sources/SRGMediaPlayerController+SRGAnalytics_DataProvider.m
@@ -48,7 +48,7 @@ - (BOOL)prepareToPlayMediaComposition:(SRGMediaComposition *)mediaComposition
         }
         
         NSDictionary<SRGResourceLoaderOption, id> *options = userInfo[SRGAnalyticsDataProviderUserInfoResourceLoaderOptionsKey];
-        NSAssert([options isKindOfClass:NSDictionary.class], @"Resource loader options must be provided as a dictionary");
+        NSAssert(! options || [options isKindOfClass:NSDictionary.class], @"Resource loader options must be provided as a dictionary");
         
         AVURLAsset *URLAsset = nil;
         
diff --git a/Framework_MediaPlayer/Sources/SRGMediaPlayerTracker.m b/Framework_MediaPlayer/Sources/SRGMediaPlayerTracker.m
index a97cd96e..eb2fedff 100644
--- a/Framework_MediaPlayer/Sources/SRGMediaPlayerTracker.m
+++ b/Framework_MediaPlayer/Sources/SRGMediaPlayerTracker.m
@@ -359,9 +359,15 @@ - (NSString *)screenType
 - (BOOL)subtitlesEnabled
 {
     AVPlayerItem *playerItem = self.mediaPlayerController.player.currentItem;
-    AVMediaSelectionGroup *legibleGroup = [playerItem.asset mediaSelectionGroupForMediaCharacteristic:AVMediaCharacteristicLegible];
-    AVMediaSelectionOption *currentLegibleOption = [playerItem selectedMediaOptionInMediaSelectionGroup:legibleGroup];
-    return currentLegibleOption != nil;
+    AVAsset *asset = playerItem.asset;
+    if ([asset statusOfValueForKey:@keypath(asset.availableMediaCharacteristicsWithMediaSelectionOptions) error:NULL] == AVKeyValueStatusLoaded) {
+        AVMediaSelectionGroup *legibleGroup = [playerItem.asset mediaSelectionGroupForMediaCharacteristic:AVMediaCharacteristicLegible];
+        AVMediaSelectionOption *currentLegibleOption = [playerItem selectedMediaOptionInMediaSelectionGroup:legibleGroup];
+        return currentLegibleOption != nil;
+    }
+    else {
+        return NO;
+    }
 }
 
 #pragma mark Notifications
diff --git a/SRGAnalytics.xcodeproj/project.pbxproj b/SRGAnalytics.xcodeproj/project.pbxproj
index b324b7a4..eb0c532d 100644
--- a/SRGAnalytics.xcodeproj/project.pbxproj
+++ b/SRGAnalytics.xcodeproj/project.pbxproj
@@ -1797,7 +1797,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 3.7.5;
+				MARKETING_VERSION = 3.7.6;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -1994,7 +1994,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 3.7.5;
+				MARKETING_VERSION = 3.7.6;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
@@ -2336,7 +2336,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 3.7.5;
+				MARKETING_VERSION = 3.7.6;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -2389,7 +2389,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 3.7.5;
+				MARKETING_VERSION = 3.7.6;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;