diff --git a/ground/openpilotgcs/openpilotgcs.pri b/ground/openpilotgcs/openpilotgcs.pri
index 7ca4defb6..2decf3df7 100644
--- a/ground/openpilotgcs/openpilotgcs.pri
+++ b/ground/openpilotgcs/openpilotgcs.pri
@@ -11,10 +11,6 @@ defineReplace(cleanPath) {
     return($$join(out, /, $$pfx))
 }
 
-defineReplace(targetPath) {
-    return($$replace(1, /, $$QMAKE_DIR_SEP))
-}
-
 defineReplace(addNewline) { 
     return($$escape_expand(\\n\\t))
 }
@@ -41,8 +37,8 @@ defineTest(addCopyFileTarget) {
     $${file}.depends   = $$src
 
     # create directory. Better would be an order only dependency
-    $${file}.commands  = -@$(MKDIR) \"$$targetPath($$dirname(dest))\" $$addNewline()
-    $${file}.commands += $(COPY_FILE) \"$$targetPath($$src)\" \"$$targetPath($$dest)\"
+    $${file}.commands  = -@$(MKDIR) \"$$dirname(dest)\" $$addNewline()
+    $${file}.commands += $(COPY_FILE) \"$$src\" \"$$dest\"
 
     QMAKE_EXTRA_TARGETS += $$file
     POST_TARGETDEPS += $$eval($${file}.target)
@@ -66,10 +62,10 @@ defineTest(addCopyDirTarget) {
     # Windows does not update directory timestamp if files are modified
     win32: $${dir}.depends += FORCE
 
-    $${dir}.commands  = @rm -rf \"$$targetPath($$dest)\" $$addNewline()
+    $${dir}.commands  = @rm -rf \"$$dest\" $$addNewline()
     # create directory. Better would be an order only dependency
-    $${dir}.commands += -@$(MKDIR) \"$$targetPath($$dirname(dest))\" $$addNewline()
-    $${dir}.commands += $(COPY_DIR) \"$$targetPath($$src)\" \"$$targetPath($$dest)\"
+    $${dir}.commands += -@$(MKDIR) \"$$dirname(dest)\" $$addNewline()
+    $${dir}.commands += $(COPY_DIR) \"$$src\" \"$$dest\"
 
     QMAKE_EXTRA_TARGETS += $$dir
     POST_TARGETDEPS += $$eval($${dir}.target)
diff --git a/ground/openpilotgcs/share/openpilotgcs/translations/translations.pro b/ground/openpilotgcs/share/openpilotgcs/translations/translations.pro
index 1389be5c4..f4c4b2778 100644
--- a/ground/openpilotgcs/share/openpilotgcs/translations/translations.pro
+++ b/ground/openpilotgcs/share/openpilotgcs/translations/translations.pro
@@ -11,10 +11,10 @@ defineReplace(prependAll) {
     return($$result)
 }
 
-XMLPATTERNS = $$targetPath($$[QT_INSTALL_BINS]/xmlpatterns)
-LUPDATE = $$targetPath($$[QT_INSTALL_BINS]/lupdate) -locations relative -no-ui-lines -no-sort
-LRELEASE = $$targetPath($$[QT_INSTALL_BINS]/lrelease)
-LCONVERT = $$targetPath($$[QT_INSTALL_BINS]/lconvert)
+XMLPATTERNS = $$[QT_INSTALL_BINS]/xmlpatterns
+LUPDATE = $$[QT_INSTALL_BINS]/lupdate -locations relative -no-ui-lines -no-sort
+LRELEASE = $$[QT_INSTALL_BINS]/lrelease
+LCONVERT = $$[QT_INSTALL_BINS]/lconvert
 
 TRANSLATIONS = $$prependAll(LANGUAGES, $$PWD/openpilotgcs_,.ts)
 
@@ -26,7 +26,7 @@ QMAKE_SUBSTITUTES += extract-mimetypes.xq.in
 ts.commands += \
     $$XMLPATTERNS -output $$MIME_TR_H $$PWD/extract-mimetypes.xq && \
     (cd $$GCS_SOURCE_TREE && $$LUPDATE src $$MIME_TR_H -ts $$TRANSLATIONS) && \
-    $$QMAKE_DEL_FILE $$targetPath($$MIME_TR_H)
+    $$QMAKE_DEL_FILE $$MIME_TR_H
 
 QMAKE_EXTRA_TARGETS += ts
 
diff --git a/ground/openpilotgcs/src/libs/version_info/version_info.pro b/ground/openpilotgcs/src/libs/version_info/version_info.pro
index 6436e0d36..ab800ef28 100644
--- a/ground/openpilotgcs/src/libs/version_info/version_info.pro
+++ b/ground/openpilotgcs/src/libs/version_info/version_info.pro
@@ -26,7 +26,7 @@ SOURCES = version_info.cpp
 
     # Create custom version_info target which generates a real file
     version_info.target   = $$VERSION_INFO_FILE
-    version_info.commands = -$(MKDIR) $$targetPath($$VERSION_INFO_DIR) $$addNewline()
+    version_info.commands = -$(MKDIR) $$VERSION_INFO_DIR $$addNewline()
     version_info.commands += $$VERSION_INFO_COMMAND \
                                     --path=\"$$ROOT_DIR\" \
                                     --template=\"$$VERSION_INFO_TEMPLATE\" \
diff --git a/ground/openpilotgcs/src/plugins/coreplugin/authorsdialog.pri b/ground/openpilotgcs/src/plugins/coreplugin/authorsdialog.pri
index 96d7457ef..3a002f114 100644
--- a/ground/openpilotgcs/src/plugins/coreplugin/authorsdialog.pri
+++ b/ground/openpilotgcs/src/plugins/coreplugin/authorsdialog.pri
@@ -20,7 +20,7 @@ include(../../python.pri)
 
     # Create custom authors target which generates a real file
     authors.target   = $$AUTHORS_FILE
-    authors.commands = -$(MKDIR) $$targetPath($$AUTHORS_DIR) $$addNewline()
+    authors.commands = -$(MKDIR) $$AUTHORS_DIR $$addNewline()
     authors.commands += $$AUTHORS_COMMAND \
                             --infile=\"$$AUTHORS_SOURCE\" \
                             --template=\"$$AUTHORS_TEMPLATE\" \
diff --git a/ground/uavobject-synthetics/uavobject-synthetics.pro b/ground/uavobject-synthetics/uavobject-synthetics.pro
index 85e53d139..a482649ac 100644
--- a/ground/uavobject-synthetics/uavobject-synthetics.pro
+++ b/ground/uavobject-synthetics/uavobject-synthetics.pro
@@ -5,11 +5,6 @@
 
 TEMPLATE = aux
 
-# Some handy defines
-defineReplace(targetPath) {
-   return($$replace(1, /, $$QMAKE_DIR_SEP))
-}
-
 defineReplace(addNewline) {
     return($$escape_expand(\\n\\t))
 }
@@ -38,17 +33,17 @@ win32 {
     # Windows sometimes remembers working directory changed from Makefile, sometimes not.
     # That's why pushd/popd is used here - to make sure that we know current directory.
 
-    uavobjects.commands += -$(MKDIR) $$targetPath(../uavobject-synthetics) $$addNewline()
-    uavobjects.commands += pushd $$targetPath(../uavobject-synthetics) &&
-    uavobjects.commands += $$targetPath(../uavobjgenerator/$${BUILD_CONFIG}/uavobjgenerator)
-    uavobjects.commands +=   $$targetPath(../../shared/uavobjectdefinition)
-    uavobjects.commands +=   $$targetPath(../..) &&
+    uavobjects.commands += -$(MKDIR) ../uavobject-synthetics $$addNewline()
+    uavobjects.commands += pushd ../uavobject-synthetics &&
+    uavobjects.commands += ../uavobjgenerator/$${BUILD_CONFIG}/uavobjgenerator
+    uavobjects.commands += ../../shared/uavobjectdefinition
+    uavobjects.commands += ../.. &&
     uavobjects.commands += popd $$addNewline()
 
-    uavobjects.commands += -$(MKDIR) $$targetPath(../openpilotgcs) $$addNewline()
-    uavobjects.commands += pushd $$targetPath(../openpilotgcs) &&
+    uavobjects.commands += -$(MKDIR) ../openpilotgcs $$addNewline()
+    uavobjects.commands += pushd ../openpilotgcs &&
     uavobjects.commands += $(QMAKE) -spec $$SPEC CONFIG+=$${BUILD_CONFIG} -r
-    uavobjects.commands +=   $$targetPath(../../ground/openpilotgcs/)openpilotgcs.pro &&
+    uavobjects.commands += ../../ground/openpilotgcs/openpilotgcs.pro &&
     uavobjects.commands += popd $$addNewline()
 }