diff --git a/src/corelib/doc/src/includes/qdebug-toString.qdocinc b/src/corelib/doc/src/includes/qdebug-toString.qdocinc
index 4602a105113..db1e1ab4537 100644
--- a/src/corelib/doc/src/includes/qdebug-toString.qdocinc
+++ b/src/corelib/doc/src/includes/qdebug-toString.qdocinc
@@ -5,3 +5,5 @@ This function is useful for cases where you need the textual representation
 of an object for debugging, but cannot use \c {operator<<}. For example:
 
 \snippet code/src_corelib_io_qdebug.cpp toString
+
+The string is streamed using \l nospace().
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 48b7538c8ef..e14d31f38ab 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -179,7 +179,7 @@ public:
     {
         QString buffer;
         QDebug stream(&buffer);
-        stream << object;
+        stream.nospace() << object;
         return buffer;
     }
 
@@ -188,7 +188,7 @@ public:
     {
         QString buffer;
         QDebug stream(&buffer);
-        stream << object;
+        stream.nospace() << object;
         return buffer;
     }
 };
diff --git a/tests/auto/corelib/io/qdebug/tst_qdebug.cpp b/tests/auto/corelib/io/qdebug/tst_qdebug.cpp
index 7b9e614cf74..4260accfd07 100644
--- a/tests/auto/corelib/io/qdebug/tst_qdebug.cpp
+++ b/tests/auto/corelib/io/qdebug/tst_qdebug.cpp
@@ -748,7 +748,7 @@ void tst_QDebug::toString() const
         MyPoint point(3, 4);
         QString expectedString;
         QDebug stream(&expectedString);
-        stream << point;
+        stream.nospace() << point;
         QCOMPARE(QDebug::toString(point), expectedString);
     }
 
@@ -758,7 +758,7 @@ void tst_QDebug::toString() const
         qobject.setObjectName("test");
         QString expectedString;
         QDebug stream(&expectedString);
-        stream << &qobject;
+        stream.nospace() << &qobject;
         QCOMPARE(QDebug::toString(&qobject), expectedString);
     }
 }