diff --git a/package/multimedia/faad2/faad2.mk b/package/multimedia/faad2/faad2.mk
index 366515cf71..567875a399 100644
--- a/package/multimedia/faad2/faad2.mk
+++ b/package/multimedia/faad2/faad2.mk
@@ -6,6 +6,8 @@
 
 FAAD2_VERSION = 2.7
 FAAD2_SITE = http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/faac
+# frontend/faad calls frexp()
+FAAD2_CONF_ENV = LIBS=-lm
 FAAD2_INSTALL_STAGING = YES
 
 $(eval $(call AUTOTARGETS))