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--- a/src/mk/localdefs.in
+++ b/src/mk/localdefs.in
@@ -32,7 +32,6 @@
 LOCALCXXFLAGS = -Wall -Wno-unused \
 	      $(INCICONV) $(XAPIANCXXFLAGS) $(X_CFLAGS) \
 	      -DRECOLL_DATADIR=\"$(RECOLL_DATADIR)\" \
-	      -DLIBDIR=\"$(libdir)\" \
 	      $(PICFLAGS) \
 	      @DEFS@