diff --git a/hiro/GNUmakefile b/hiro/GNUmakefile
index 51671b96..04837b27 100755
--- a/hiro/GNUmakefile
+++ b/hiro/GNUmakefile
@@ -52,7 +52,7 @@ ifneq ($(filter $(platform),linux bsd),)
   endif
 
   ifeq ($(hiro),qt5)
-    moc = /usr/local/lib/qt5/bin/moc
+    moc = $(shell pkg-config --variable=host_bins Qt5Core)/moc
     hiro.flags   = $(flags.cpp) -DHIRO_QT=5 -fPIC $(shell pkg-config --cflags Qt5Core Qt5Gui Qt5Widgets)
     hiro.options = -L/usr/local/lib -lX11 $(shell pkg-config --libs Qt5Core Qt5Gui Qt5Widgets)
   endif