diff --git a/ax_check_qt.m4 b/ax_check_qt.m4
index e0eecf2..dfd8ac2 100644
--- a/ax_check_qt.m4
+++ b/ax_check_qt.m4
@@ -119,10 +119,25 @@ AC_DEFUN([AX_CHECK_QT], [
     AC_DEFINE([HAVE_$1])
     QTDIR=$(${PKG_CONFIG} --variable=prefix Qt5Core)
     qt_host_bins=$(${PKG_CONFIG} --variable=host_bins Qt5Core)
-    if test -d "${qt_host_bins}"; then
-      QT_PLUGIN_PATH=${qt_host_bins}/../plugins
+    qt_libdir=$(${PKG_CONFIG} --variable=libdir Qt5Core)
+    if test -d "${qt_libdir}" -a -d "${qt_libdir}/plugins"; then
+      QT_PLUGIN_PATH="${qt_libdir}/plugins"
+    elif test -d "${qt_libdir}/qt5" -a -d "${qt_libdir}/qt5/plugins"; then
+      QT_PLUGIN_PATH="${qt_libdir}/qt5/plugins"
+    elif test -d "${qt_host_bins}" -a -d "${qt_host_bins}/../plugins"; then
+      QT_PLUGIN_PATH="${qt_host_bins}/../plugins"
+    elif test -d "${QTDIR}/plugins; then
+      QT_PLUGIN_PATH="${QTDIR}/plugins"
+    elif test -d "${QTDIR}/share/qt5/plugins; then
+      QT_PLUGIN_PATH="${QTDIR}/share/qt5/plugins"
     else
-      QT_PLUGIN_PATH=${QTDIR}/share/qt5/plugins
+      AC_MSG_ERROR([QT_PLUGIN_PATH not found
+ - not in: ${qt_libdir}/plugins
+ - not in: ${qt_libdir}/qt5/plugins
+ - not in: ${qt_host_bins}/../plugins
+ - not in: ${QTDIR}/plugins
+ - not in: ${QTDIR}/share/qt5/plugins
+])
     fi
     MOC_FLAGS+=" -DHAVE_$1=1 ${[$1]5_CFLAGS}"
     [$1]_CPPFLAGS="${[$1]5_CFLAGS}"
diff --git a/scripts/ax_check_qt.m4 b/scripts/ax_check_qt.m4
index e0eecf2..dfd8ac2 100644
--- a/scripts/ax_check_qt.m4
+++ b/scripts/ax_check_qt.m4
@@ -119,10 +119,25 @@ AC_DEFUN([AX_CHECK_QT], [
     AC_DEFINE([HAVE_$1])
     QTDIR=$(${PKG_CONFIG} --variable=prefix Qt5Core)
     qt_host_bins=$(${PKG_CONFIG} --variable=host_bins Qt5Core)
-    if test -d "${qt_host_bins}"; then
-      QT_PLUGIN_PATH=${qt_host_bins}/../plugins
+    qt_libdir=$(${PKG_CONFIG} --variable=libdir Qt5Core)
+    if test -d "${qt_libdir}" -a -d "${qt_libdir}/plugins"; then
+      QT_PLUGIN_PATH="${qt_libdir}/plugins"
+    elif test -d "${qt_libdir}/qt5" -a -d "${qt_libdir}/qt5/plugins"; then
+      QT_PLUGIN_PATH="${qt_libdir}/qt5/plugins"
+    elif test -d "${qt_host_bins}" -a -d "${qt_host_bins}/../plugins"; then
+      QT_PLUGIN_PATH="${qt_host_bins}/../plugins"
+    elif test -d "${QTDIR}/plugins; then
+      QT_PLUGIN_PATH="${QTDIR}/plugins"
+    elif test -d "${QTDIR}/share/qt5/plugins; then
+      QT_PLUGIN_PATH="${QTDIR}/share/qt5/plugins"
     else
-      QT_PLUGIN_PATH=${QTDIR}/share/qt5/plugins
+      AC_MSG_ERROR([QT_PLUGIN_PATH not found
+ - not in: ${qt_libdir}/plugins
+ - not in: ${qt_libdir}/qt5/plugins
+ - not in: ${qt_host_bins}/../plugins
+ - not in: ${QTDIR}/plugins
+ - not in: ${QTDIR}/share/qt5/plugins
+])
     fi
     MOC_FLAGS+=" -DHAVE_$1=1 ${[$1]5_CFLAGS}"
     [$1]_CPPFLAGS="${[$1]5_CFLAGS}"