diff --git a/fmdb.xcodeproj/project.pbxproj b/fmdb.xcodeproj/project.pbxproj
index 170faba7..7dcf5290 100644
--- a/fmdb.xcodeproj/project.pbxproj
+++ b/fmdb.xcodeproj/project.pbxproj
@@ -218,7 +218,7 @@
 		08FB7793FE84155DC02AAC07 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0430;
+				LastUpgradeCheck = 0460;
 			};
 			buildConfigurationList = 1DEB927808733DD40010E9CD /* Build configuration list for PBXProject "fmdb" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -275,7 +275,6 @@
 				ARCHS = "$(ARCHS_STANDARD_64_BIT)";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_IMPLICIT_SIGN_CONVERSION = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				CLANG_WARN_OBJC_IMPLICIT_ATOMIC_PROPERTIES = YES;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
 				COPY_PHASE_STRIP = NO;
@@ -296,7 +295,6 @@
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_IMPLICIT_SIGN_CONVERSION = YES;
-				CLANG_WARN_OBJCPP_ARC_ABI = YES;
 				CLANG_WARN_OBJC_IMPLICIT_ATOMIC_PROPERTIES = YES;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
@@ -314,6 +312,10 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -321,6 +323,7 @@
 				GCC_WARN_MISSING_PARENTHESES = YES;
 				GCC_WARN_PEDANTIC = YES;
 				GCC_WARN_SIGN_COMPARE = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 			};
 			name = Debug;
@@ -328,9 +331,14 @@
 		1DEB927A08733DD40010E9CD /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 			};
 			name = Release;
@@ -339,6 +347,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -350,6 +359,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				PRODUCT_NAME = FMDB;
diff --git a/src/FMDatabase.m b/src/FMDatabase.m
index f4ee0fd0..bb1a38b4 100644
--- a/src/FMDatabase.m
+++ b/src/FMDatabase.m
@@ -211,7 +211,7 @@ - (void)setCachedStatement:(FMStatement*)statement forQuery:(NSString*)query {
 
 
 - (BOOL)rekey:(NSString*)key {
-    NSData *keyData = [NSData dataWithBytes:(void *)[key UTF8String] length:(int)strlen([key UTF8String])];
+    NSData *keyData = [NSData dataWithBytes:(void *)[key UTF8String] length:(NSUInteger)strlen([key UTF8String])];
     
     return [self rekeyWithData:keyData];
 }
@@ -236,7 +236,7 @@ - (BOOL)rekeyWithData:(NSData *)keyData {
 }
 
 - (BOOL)setKey:(NSString*)key {
-    NSData *keyData = [NSData dataWithBytes:[key UTF8String] length:(int)strlen([key UTF8String])];
+    NSData *keyData = [NSData dataWithBytes:[key UTF8String] length:(NSUInteger)strlen([key UTF8String])];
     
     return [self setKeyWithData:keyData];
 }
@@ -864,7 +864,7 @@ - (BOOL)executeUpdate:(NSString*)sql error:(NSError**)outErr withArgumentsInArra
             
             if (_traceExecution) {
                 if ([obj isKindOfClass:[NSData class]]) {
-                    NSLog(@"data: %d byte", [(NSData*)obj length]);
+                    NSLog(@"data: %ld bytes", (unsigned long)[(NSData*)obj length]);
                 }
                 else {
                     NSLog(@"obj: %@", obj);