diff --git a/test/Makefile.am b/test/Makefile.am
index 4f4206e..4a21629 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -42,8 +42,8 @@ LDADDS =							\
 
 noinst_PROGRAMS = testtomoegtk testtomoegtkedit
 
-testtomoegtk_LDADD = $(LDADDS)
+testtomoegtk_LDADD = $(LDADDS) -lm
 testtomoegtk_SOURCES = testtomoegtk.c
 
-testtomoegtkedit_LDADD = $(LDADDS)
+testtomoegtkedit_LDADD = $(LDADDS) -lm
 testtomoegtkedit_SOURCES = testtomoegtkedit.c