diff --git a/doc/doc.pri b/doc/doc.pri
index 19a040afc4f99ef14ccaed61a8ed6809fd833c27..b4c8800f634d7018e5f9b03289ec6e15df1dfe58 100644
--- a/doc/doc.pri
+++ b/doc/doc.pri
@@ -7,8 +7,8 @@ equals(QMAKE_DIR_SEP, /) {   # unix, mingw+msys
     # The lack of spaces in front of the && is necessary!
     QDOC = set SRCDIR=$$PWD&& set OUTDIR=$$OUT_PWD/doc/html&& $$QDOC_BIN
 } else {   # nmake
-    QDOC = set SRCDIR=$$PWD $$escape_expand(\n\t) \
-           set OUTDIR=$$OUT_PWD/doc/html $$escape_expand(\n\t) \
+    QDOC = set SRCDIR=$$PWD $$escape_expand(\\n\\t) \
+           set OUTDIR=$$OUT_PWD/doc/html $$escape_expand(\\n\\t) \
            $$QDOC_BIN
 }
 
diff --git a/qtcreator.pro b/qtcreator.pro
index d00628a80afe01da16f5a005926325eaa164a6f1..6593c0fd33b4bad8b9a1cec602bbd2fd388aa0a9 100644
--- a/qtcreator.pro
+++ b/qtcreator.pro
@@ -1,5 +1,5 @@
 #version check qt
-contains(QT_VERSION, ^4\.[0-6]\..*) {
+contains(QT_VERSION, ^4\\.[0-6]\\..*) {
     message("Cannot build Qt Creator with Qt version $${QT_VERSION}.")
     error("Use at least Qt 4.7.")
 }
diff --git a/src/tools/qtcdebugger/qtcdebugger.pro b/src/tools/qtcdebugger/qtcdebugger.pro
index ce8e9fdff1ce4d711468ee0e7820b2114702c724..f7ae016d0cd978597aa334ceeb9a015db7a38cc4 100644
--- a/src/tools/qtcdebugger/qtcdebugger.pro
+++ b/src/tools/qtcdebugger/qtcdebugger.pro
@@ -4,4 +4,4 @@ TARGET = qtcdebugger
 TEMPLATE = app
 SOURCES += main.cpp
 
-DESTDIR=..\..\..\bin
+DESTDIR=../../../bin