diff --git a/util/fbrun/Makefile.am b/util/fbrun/Makefile.am
index a74b5d6a..ba211d65 100644
--- a/util/fbrun/Makefile.am
+++ b/util/fbrun/Makefile.am
@@ -2,6 +2,6 @@ FLUXBOX_SRC_DIR=../../src/
 INCLUDES = -I${FLUXBOX_SRC_DIR}
 bin_PROGRAMS = fbrun
 fbrun_SOURCES = FbRun.hh FbRun.cc main.cc
-fbrun_LDADD = ${FLUXBOX_SRC_DIR}Font.o
+fbrun_LDADD = ${FLUXBOX_SRC_DIR}Font.o ${FLUXBOX_SRC_DIR}StringUtil.o
 
 fbrun.o: ${FLUXBOX_SRC_DIR}/Font.hh