diff --git a/test/Makefile b/test/Makefile
index 38b3594..8f9ad59 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,7 +1,7 @@
 include ../Makefile.conf
 
 LDFLAGS:=-L../src $(LDFLAGS)
-LDLIBS=-lstdc++ -lpEpEngine -lpEpAdapter -lPityTest11 -lpthread -ldl
+LDLIBS=-lstdc++ -lpEpEngine -lpEpAdapter -lPityTest11 -lpthread -ldl -lm
 CXXFLAGS:=-I../src -DENGINE_TEST=$(ENGINE_TEST) $(CXXFLAGS)
 
 # Test