diff --git a/main/Makefile b/main/Makefile
index 0c1b11ed83cd6b3915a7726a811813449a32b53f..95c3c70c6885b62e440fdda1b01bd6f486abb50f 100644
--- a/main/Makefile
+++ b/main/Makefile
@@ -287,7 +287,7 @@ endif
 
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTLDFLAGS+=-Wl,-soname=$(ASTPJ_LIB) $(PJ_LDFLAGS)
 $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskpj\" -DAST_NOT_MODULE $(PJ_CFLAGS)
-$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) -lssl -lcrypto -luuid -lm -lpthread
+$(ASTPJ_LIB).$(ASTPJ_SO_VERSION): LIBS+=$(PJPROJECT_LDLIBS) -lssl -lcrypto -luuid -lm -lpthread $(RT_LIB)
 ifeq ($(GNU_LD),1)
     $(ASTPJ_LIB).$(ASTPJ_SO_VERSION): SO_SUPPRESS_SYMBOLS=-Wl,--version-script,libasteriskpj.exports,--warn-common
 endif
@@ -312,7 +312,7 @@ ASTPJ_LIB:=libasteriskpj.dylib
 # /lib or /usr/lib
 $(ASTPJ_LIB): _ASTLDFLAGS+=-dynamiclib -install_name $(ASTLIBDIR)/$(ASTPJ_LIB) $(PJ_LDFLAGS)
 $(ASTPJ_LIB): _ASTCFLAGS+=-fPIC -DAST_MODULE=\"asteriskpj\" $(PJ_CFLAGS) -DAST_NOT_MODULE
-$(ASTPJ_LIB): LIBS+=$(PJPROJECT_LIBS)  -lssl -lcrypto -luuid -lm -lrt -lpthread
+$(ASTPJ_LIB): LIBS+=$(PJPROJECT_LIBS)  -lssl -lcrypto -luuid -lm -lpthread $(RT_LIB)
 $(ASTPJ_LIB): SOLINK=$(DYLINK)
 
 # Special rules for building a shared library (not a dynamically loadable module)