Index: src/ObjMatrix.h
==================================================================
--- src/ObjMatrix.h
+++ src/ObjMatrix.h
@@ -20,5 +20,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #import "MTXClient.h"
 #import "MTXRequest.h"
+
+#import "MTXLoginFailedException.h"

Index: tests/Makefile
==================================================================
--- tests/Makefile
+++ tests/Makefile
@@ -38,8 +38,8 @@
 	rm -f libobjmatrix.${OBJMATRIX_LIB_MAJOR}.dylib; \
 	exit $$EXIT
 
 ${PROG_NOINST}: ${LIBOBJMATRIX_DEP}
 
-CPPFLAGS += -I../src
+CPPFLAGS += -I../src -I../src/exceptions
 LIBS := -L../src -lobjmatrix ${LIBS}
 LD = ${OBJC}

Index: tests/tests.m
==================================================================
--- tests/tests.m
+++ tests/tests.m
@@ -20,11 +20,11 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
 #import <ObjFW/ObjFW.h>
 
-#import "MTXClient.h"
+#import "ObjMatrix.h"
 
 @interface Tests: OFObject <OFApplicationDelegate>
 @end
 
 OF_APPLICATION_DELEGATE(Tests)
@@ -48,13 +48,17 @@
 		      homeserver: homeserver
 			   block: ^ (MTXClient *client, id exception) {
 		if (exception != nil) {
 			[of_stdout writeFormat: @"Error logging in: %@\n",
 						exception];
+			if ([exception isKindOfClass:
+			    MTXLoginFailedException.class])
+				[of_stdout writeFormat: @"Response: %@\n",
+							[exception response]];
 			[OFApplication terminateWithStatus: 1];
 		}
 
 		[of_stdout writeFormat: @"Logged in client: %@\n", client];
 		[OFApplication terminate];
 	}];
 }
 @end