diff --git a/examples/makefile.am b/examples/makefile.am
index 529a03d..8237f03 100644
--- a/examples/makefile.am
+++ b/examples/makefile.am
@@ -8,7 +8,7 @@ AM_LDFLAGS = -L${top_builddir}/src/.libs
 LDADD = -lproxyface
 
 noinst_PROGRAMS = getproxylist
-if QT
+if HAVE_QT
 noinst_PROGRAMS += simplegui
 simplegui_SOURCES = simplegui.cxx
 endif
diff --git a/src/makefile.am b/src/makefile.am
index 14df33b..199f60a 100644
--- a/src/makefile.am
+++ b/src/makefile.am
@@ -5,7 +5,7 @@
 ##       1         2         3         4         5         6         7         8
 ## 45678901234567890123456789012345678901234567890123456789012345678901234567890
 
-if QT
+if HAVE_QT
 UISOURCES  = proxyface/proxy.ui proxyface/proxyauth.ui
 RESOURCES  = proxyface/resources.cxx
 MOCHEADER  = proxyface/proxy.hxx proxyface/autoproxy.hxx proxyface/proxyauth.hxx