diff --git a/main/Makefile b/main/Makefile
index 9387a04870d00a391e9caff8d194be0f77c8cd42..5ec9b8fe0e89ef267de8d13ef18c240b18cf88f4 100644
--- a/main/Makefile
+++ b/main/Makefile
@@ -194,6 +194,8 @@ ASTSSL_SO_VERSION=1
 
 ASTSSL_LDLIBS=-L. -lasteriskssl
 
+libasteriskssl.o: _ASTCFLAGS+=$(OPENSSL_INCLUDE)
+
 ifeq ($(findstring darwin,$(OSARCH)),) # not Darwin
 ASTSSL_LIB:=libasteriskssl.so
 
@@ -235,6 +237,8 @@ endif
 
 endif
 
+tcptls.o: _ASTCFLAGS+=$(OPENSSL_INCLUDE)
+
 $(MAIN_TGT): $(OBJS) $(ASTSSL_LIB) $(LIBEDIT_OBJ) $(AST_EMBED_LDSCRIPTS)
 	@$(CC) -c -o buildinfo.o $(_ASTCFLAGS) buildinfo.c $(ASTCFLAGS)
 	$(ECHO_PREFIX) echo "   [LD] $(OBJS) $(LIBEDIT_OBJ) $(AST_EMBED_LDSCRIPTS) -> $@"