diff --git a/tdescreensaver/kdesavers/Makefile.am b/tdescreensaver/kdesavers/Makefile.am
index b5ba9419..9c9e0970 100644
--- a/tdescreensaver/kdesavers/Makefile.am
+++ b/tdescreensaver/kdesavers/Makefile.am
@@ -4,7 +4,7 @@
 
 SUBDIRS = . data
 
-AM_CPPFLAGS = -UQT_NO_ASCII_CAST
+AM_CPPFLAGS = -UTQT_NO_ASCII_CAST
 
 INCLUDES = $(all_includes) $(GLINC) $(LIBART_CFLAGS)
 AM_LDFLAGS = $(all_libraries) $(KDE_RPATH) $(LIB_TQT) -lDCOP $(LIB_TDECORE) $(LIB_TDEUI) -ltdefx $(LIB_TDEIO) -ltdetexteditor
diff --git a/tdescreensaver/xsavers/Makefile.am b/tdescreensaver/xsavers/Makefile.am
index 9c5fd258..dd253e4a 100644
--- a/tdescreensaver/xsavers/Makefile.am
+++ b/tdescreensaver/xsavers/Makefile.am
@@ -1,4 +1,4 @@
-AM_CPPFLAGS = -UQT_NO_ASCII_CAST
+AM_CPPFLAGS = -UTQT_NO_ASCII_CAST
 
 INCLUDES = $(all_includes) $(GLINC)
 AM_LDFLAGS = $(all_libraries) $(KDE_RPATH) $(LIB_TQT) -lDCOP $(LIB_TDECORE) $(LIB_TDEUI) -ltdefx $(LIB_TDEIO) -ltdetexteditor