diff --git a/src/lib/src/Makefile.am b/src/lib/src/Makefile.am
index 288ecad..2ef73b0 100644
--- a/src/lib/src/Makefile.am
+++ b/src/lib/src/Makefile.am
@@ -5,7 +5,7 @@ AM_CPPFLAGS = \
 	-Wall -Werror -Wextra
 
 pkglib_LTLIBRARIES = libfwts.la
-libfwts_la_LDFLAGS = -lpcre -lpthread -ljson -version-info 1:0:0 \
+libfwts_la_LDFLAGS = -lm -lpcre -lpthread -ljson -version-info 1:0:0 \
 	-L$(top_srcdir)/src/acpica/source/compiler -lfwtsiasl
 
 libfwts_la_SOURCES = \