diff --git a/pytde350.prj b/pytde350.prj
index f838a79..1986470 100644
--- a/pytde350.prj
+++ b/pytde350.prj
@@ -81,7 +81,7 @@ libs       =  -L@BL_TDEDIR@ -lsip -lqtcmodule -lDCOP -ltdecore -ldcopcmodule
 amend      = * ctor parent /TransferThis/
 amend      = * all parent /Transfer/
 sipslot    = pObjSlot psMethodSlot tdeaccel kglobalaccel
-define     = "Q_WS_X11", "1"
+define     = "TQ_WS_X11", "1"
 define     = "\(TQt::ALT \<\< 1\)", "16777216"
 define     = "\(TQt::META\)", "16777216"
 define     = "enum\ URIMode\ m_iUriMode\ \:\ 3\;", ""
diff --git a/pytde351.prj b/pytde351.prj
index c0a9bab..41f6adb 100644
--- a/pytde351.prj
+++ b/pytde351.prj
@@ -81,7 +81,7 @@ libs       =  -L@BL_TDEDIR@ -lsip -lqtcmodule -lDCOP -ltdecore -ldcopcmodule
 amend      = * ctor parent /TransferThis/
 amend      = * all parent /Transfer/
 sipslot    = pObjSlot psMethodSlot tdeaccel kglobalaccel
-define     = "Q_WS_X11", "1"
+define     = "TQ_WS_X11", "1"
 define     = "\(TQt::ALT \<\< 1\)", "16777216"
 define     = "\(TQt::META\)", "16777216"
 define     = "enum\ URIMode\ m_iUriMode\ \:\ 3\;", ""
diff --git a/pytde352.prj b/pytde352.prj
index 3362696..0b2f056 100644
--- a/pytde352.prj
+++ b/pytde352.prj
@@ -81,7 +81,7 @@ libs       =  -L@BL_TDEDIR@ -lsip -lqtcmodule -lDCOP -ltdecore -ldcopcmodule
 amend      = * ctor parent /TransferThis/
 amend      = * all parent /Transfer/
 sipslot    = pObjSlot psMethodSlot tdeaccel kglobalaccel
-define     = "Q_WS_X11", "1"
+define     = "TQ_WS_X11", "1"
 define     = "\(TQt::ALT \<\< 1\)", "16777216"
 define     = "\(TQt::META\)", "16777216"
 define     = "enum\ URIMode\ m_iUriMode\ \:\ 3\;", ""
diff --git a/pytde353.prj b/pytde353.prj
index 705af1e..f08e6d3 100644
--- a/pytde353.prj
+++ b/pytde353.prj
@@ -81,7 +81,7 @@ libs       =  -L@BL_TDEDIR@ -lsip -lqtcmodule -lDCOP -ltdecore -ldcopcmodule
 amend      = * ctor parent /TransferThis/
 amend      = * all parent /Transfer/
 sipslot    = pObjSlot psMethodSlot tdeaccel kglobalaccel
-define     = "Q_WS_X11", "1"
+define     = "TQ_WS_X11", "1"
 define     = "\(TQt::ALT \<\< 1\)", "16777216"
 define     = "\(TQt::META\)", "16777216"
 define     = "enum\ URIMode\ m_iUriMode\ \:\ 3\;", ""