diff --git a/SLS_C/include/sls/repl.h b/SLS_C/include/sls/repl.h
index df19dce..6f3b889 100644
--- a/SLS_C/include/sls/repl.h
+++ b/SLS_C/include/sls/repl.h
@@ -6,4 +6,6 @@
 #ifndef SLS_REPL_H
 #define SLS_REPL_H
 
+int repl(int argc, char *argv[]);
+
 #endif // SLS_REPL_H
diff --git a/SLS_C/src/main.c b/SLS_C/src/main.c
index 09c2f95..64fbefa 100644
--- a/SLS_C/src/main.c
+++ b/SLS_C/src/main.c
@@ -5,7 +5,7 @@
 
 #include <stdio.h>
 
-int main(void) {
+int main(int argc, char *argv[]) {
     printf("Hello, world!\n");
     return 0;
 }