diff --git a/src/mk/localdefs.in b/src/mk/localdefs.in
index be073670..47343ebc 100644
--- a/src/mk/localdefs.in
+++ b/src/mk/localdefs.in
@@ -5,5 +5,5 @@ XAPIANCXXFLAGS=@XAPIANCXXFLAGS@
 LIBICONV=@LIBICONV@
 INCICONV=@INCICONV@
 
-LOCALCXXFLAGS = $(INCICONV) $(CXXFLAGSXAPIAN)
+LOCALCXXFLAGS = $(INCICONV) $(XAPIANCXXFLAGS)