diff --git a/src/shared/file.c b/src/shared/file.c
index d617b05..7a71aec 100644
--- a/src/shared/file.c
+++ b/src/shared/file.c
@@ -136,7 +136,7 @@ bool file_save_to_disk(const char* root_directory, File* file) {
   return ok;
 }
 
-File* receive_incremental_check(int fd, Config* config, bool* skipped) {
+File* receive_incremental_check(int fd, const Config* config, bool* skipped) {
   *skipped = false;
   char* check_path = receive_str(fd);
   if (check_path == NULL) {
diff --git a/src/shared/file.h b/src/shared/file.h
index 088bd06..f2d692e 100644
--- a/src/shared/file.h
+++ b/src/shared/file.h
@@ -32,7 +32,7 @@ FileMetadata* file_metadata_create(const struct stat* stats);
 void file_metadata_destroy(void* metadata);
 bool to_disk(const char* path, const void* data, unsigned long long data_size);
 bool file_save_to_disk(const char* root_directory, File* file);
-File* receive_incremental_check(int fd, Config* config, bool* skipped);
+File* receive_incremental_check(int fd, const Config* config, bool* skipped);
 int receive_manifest(int fd, const Config* config, int* next_status);
 
 #endif