diff --git a/extras/sanity_checks/Makefile b/extras/sanity_checks/Makefile
index c3bba635362ed6e67810b0a9368c371c2b38ebbf..454cab058d2dafb2d214cbdc1dc5f96382581e81 100644
--- a/extras/sanity_checks/Makefile
+++ b/extras/sanity_checks/Makefile
@@ -26,7 +26,7 @@ INCLUDES = -I$(OST_ROOT)/include -I$(PROMOD3_ROOT)/include
 LIB_DIRS = -L$(OST_ROOT)/lib64 -L$(PROMOD3_ROOT)/lib64
 LIBS = -lpromod3_core -lpromod3_loop -lpromod3_modelling -lpromod3_sidechain
 LIBS += -lost_io -lost_mol -lost_seq -lost_seq_alg -lost_mol_alg -lost_conop
-LIBS += -lost_base -lost_geom -lost_mol_mm
+LIBS += -lost_base -lost_geom -lost_mol_mm -lboost_system
 
 # add rpath to find shared objects (req. gcc)
 LDFLAGS += "-Wl,-rpath,$(PROMOD3_ROOT)/lib64:$(OST_ROOT)/lib64"