diff --git a/src/client/Makefile.am b/src/client/Makefile.am
--- a/src/client/Makefile.am
+++ b/src/client/Makefile.am
@@ -1,4 +1,4 @@
 bin_PROGRAMS = distren
 distren_SOURCES = distren.c
 distren_LDADD = @DISTLIBS_LIBS@ @top_builddir@/src/common/libdistren.la
-distren_CXXFLAGS = @DISTLIBS_CFLAGS@ -I@top_srcdir@/src/common
+distren_CFLAGS = @DISTLIBS_CFLAGS@ -I@top_srcdir@/src/common