diff --git a/Makefile b/Makefile
index 49d3bcb..5e0deab 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ RELEASE_FLAGS = -Wall -Wextra
 LFLAGS = -lpthread
 
 # Source files
-SRCS = webserver.c client_handler.c request_handler.c http_stuff.c
+SRCS = webserver.c client_handler.c request_handler.c http_stuff.c response_builder.c
 
 # Object files definition
 OBJS = $(SRCS:.c=.o)