diff --git a/Classes/BITCrashReportTextFormatter.m b/Classes/BITCrashReportTextFormatter.m
index 1dd7cab44a..755686dba4 100644
--- a/Classes/BITCrashReportTextFormatter.m
+++ b/Classes/BITCrashReportTextFormatter.m
@@ -589,7 +589,7 @@ static const char *findSEL (const char *imageName, NSString *imageUUID, uint64_t
 #endif
     [text appendFormat: fmt,
      imageInfo.imageBaseAddress,
-     imageInfo.imageBaseAddress + (MAX(1, imageInfo.imageSize) - 1), // The Apple format uses an inclusive range
+     imageInfo.imageBaseAddress + (MAX(1U, imageInfo.imageSize) - 1), // The Apple format uses an inclusive range
      binaryDesignator,
      [imageInfo.imageName lastPathComponent],
      archName,
@@ -817,7 +817,7 @@ static const char *findSEL (const char *imageName, NSString *imageUUID, uint64_t
   
   /* Make sure UTF8/16 characters are handled correctly */
   NSInteger offset = 0;
-  NSInteger index = 0;
+  NSUInteger index = 0;
   for (index = 0; index < [imageName length]; index++) {
     NSRange range = [imageName rangeOfComposedCharacterSequenceAtIndex:index];
     if (range.length > 1) {
diff --git a/Classes/BITFeedbackListViewCell.m b/Classes/BITFeedbackListViewCell.m
index 91dc8826bd..8e543e63be 100644
--- a/Classes/BITFeedbackListViewCell.m
+++ b/Classes/BITFeedbackListViewCell.m
@@ -359,7 +359,7 @@
 
 - (void)imageButtonPressed:(id)sender {
   if ([self.delegate respondsToSelector:@selector(listCell:didSelectAttachment:)]) {
-    NSInteger index = [self.attachmentViews indexOfObject:sender];
+    NSUInteger index = [self.attachmentViews indexOfObject:sender];
     if (index != NSNotFound && [self.message previewableAttachments].count > index) {
       BITFeedbackMessageAttachment *attachment = [self.message previewableAttachments][index];
       [self.delegate listCell:self didSelectAttachment:attachment];
diff --git a/Classes/BITFeedbackListViewController.m b/Classes/BITFeedbackListViewController.m
index 8d2ef7a173..5291cd65f1 100644
--- a/Classes/BITFeedbackListViewController.m
+++ b/Classes/BITFeedbackListViewController.m
@@ -962,7 +962,7 @@
   self.cachedPreviewItems = nil;
   NSMutableArray *collectedAttachments = [NSMutableArray new];
   
-  for (int i = 0; i < self.manager.numberOfMessages; i++) {
+  for (uint i = 0; i < self.manager.numberOfMessages; i++) {
     BITFeedbackMessage *message = [self.manager messageAtIndex:i];
     [collectedAttachments addObjectsFromArray:message.previewableAttachments];
   }
diff --git a/Classes/BITImageAnnotationViewController.m b/Classes/BITImageAnnotationViewController.m
index 347ea21273..ba24fe34fe 100644
--- a/Classes/BITImageAnnotationViewController.m
+++ b/Classes/BITImageAnnotationViewController.m
@@ -301,7 +301,7 @@ typedef NS_ENUM(NSInteger, BITImageAnnotationViewControllerInteractionMode) {
     BITImageAnnotation *candidate = nil;
     BOOL validView = YES;
     
-    for ( int i = 0; i<gestureRecognizer.numberOfTouches; i++){
+    for (uint i = 0; i < gestureRecognizer.numberOfTouches; i++){
       BITImageAnnotation *newCandidate = (BITImageAnnotation *)[self.view hitTest:[gestureRecognizer locationOfTouch:i inView:self.view] withEvent:nil];
       
       if (![newCandidate isKindOfClass:[BITImageAnnotation class]]){