diff --git a/Makefile.am b/Makefile.am
index f8b1c11..e55cab3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -81,7 +81,7 @@
 if SNDFILE
 noinst_PROGRAMS += sbc/sbctester
 
-sbc_sbctester_LDADD = @SNDFILE_LIBS@
+sbc_sbctester_LDADD = @SNDFILE_LIBS@ -lm
 sbc_sbctest_CFLAGS = @SNDFILE_CFLAGS@
 endif
 endif