diff --git a/acinclude.m4 b/acinclude.m4
index 717a256..513ec72 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1883,7 +1883,7 @@ else
  all_includes="$KDE_INCLUDES $all_includes"
 fi
 
-KDE_DEFAULT_CXXFLAGS="-DQT_NO_ASCII_CAST -DQT_NO_STL -DQT_NO_COMPAT -DQT_NO_TRANSLATION"
+KDE_DEFAULT_CXXFLAGS="-DTQT_NO_ASCII_CAST -DTQT_NO_STL -DTQT_NO_COMPAT -DTQT_NO_TRANSLATION"
  
 KDE_LDFLAGS="-L$kde_libraries"
 if test ! "$kde_libraries" = "$x_libraries" && test ! "$kde_libraries" = "$qt_libraries" ; then 
diff --git a/configure.in b/configure.in
index 5f63fd7..c9d0509 100644
--- a/configure.in
+++ b/configure.in
@@ -170,7 +170,7 @@ dnl KDE_NEED_FLEX dnl __tdevelop__
 dnl AC_PROG_YACC dnl __tdevelop__
 
 
-CPPFLAGS="$CPPFLAGS -D_LARGEFILE64_SOURCE -DKDE_NO_COMPAT -DQT_NO_ASCII_CAST"
+CPPFLAGS="$CPPFLAGS -D_LARGEFILE64_SOURCE -DKDE_NO_COMPAT -DTQT_NO_ASCII_CAST"
 KDE_CREATE_SUBDIRSLIST
 AC_CONFIG_FILES([ Makefile ])
 AC_CONFIG_FILES([ doc/Makefile ])
diff --git a/configure.in.in b/configure.in.in
index bdd2801..9bbc9f6 100644
--- a/configure.in.in
+++ b/configure.in.in
@@ -121,4 +121,4 @@ dnl KDE_NEED_FLEX dnl __tdevelop__
 dnl AC_PROG_YACC dnl __tdevelop__
 
 
-CPPFLAGS="$CPPFLAGS -D_LARGEFILE64_SOURCE -DKDE_NO_COMPAT -DQT_NO_ASCII_CAST"
+CPPFLAGS="$CPPFLAGS -D_LARGEFILE64_SOURCE -DKDE_NO_COMPAT -DTQT_NO_ASCII_CAST"
diff --git a/krusader.kdevprj b/krusader.kdevprj
index e00c976..1a0fee2 100644
--- a/krusader.kdevprj
+++ b/krusader.kdevprj
@@ -17,7 +17,7 @@ install_location=
 type=DATA
 
 [Config for BinMakefileAm]
-addcxxflags=-DKDE_NO_COMPAT -DQT_NO_ASCII_CAST -D_LARGEFILE64_SOURCE
+addcxxflags=-DKDE_NO_COMPAT -DTQT_NO_ASCII_CAST -D_LARGEFILE64_SOURCE
 bin_program=krusader
 cflags=-DKDE_NO_COMPAT -D_LARGEFILE64_SOURCE
 cppflags=-DKDE_NO_COMPAT -D_LARGEFILE64_SOURCE