diff --git a/tester/Makefile.am b/tester/Makefile.am
index afa7f77a9..348306bca 100644
--- a/tester/Makefile.am
+++ b/tester/Makefile.am
@@ -34,7 +34,7 @@ if !BUILD_IOS
 noinst_PROGRAMS = liblinphone_tester
 
 liblinphone_tester_SOURCES = liblinphone_tester.c
-liblinphone_tester_LDADD   = $(top_builddir)/coreapi/liblinphone.la liblinphonetester.la
+liblinphone_tester_LDADD   = $(top_builddir)/coreapi/liblinphone.la liblinphonetester.la -lm
 
 endif