diff --git a/cli/src/generate/render.rs b/cli/src/generate/render.rs
index edc32621..95e4f2e7 100644
--- a/cli/src/generate/render.rs
+++ b/cli/src/generate/render.rs
@@ -1360,7 +1360,7 @@ impl Generator {
 
         add_line!(
             self,
-            "TS_PUBLIC const TSLanguage *{language_function_name}() {{",
+            "TS_PUBLIC const TSLanguage *{language_function_name}(void) {{",
         );
         indent!(self);
         add_line!(self, "static const TSLanguage language = {{");
diff --git a/docs/section-3-creating-parsers.md b/docs/section-3-creating-parsers.md
index 471f2067..d3876b39 100644
--- a/docs/section-3-creating-parsers.md
+++ b/docs/section-3-creating-parsers.md
@@ -785,7 +785,7 @@ Finally, you must define five functions with specific names, based on your langu
 #### Create
 
 ```c
-void * tree_sitter_my_language_external_scanner_create() {
+void *tree_sitter_my_language_external_scanner_create(void) {
   // ...
 }
 ```
@@ -891,7 +891,7 @@ For example, assuming you wanted to allocate 100 bytes for your scanner, you'd d
 
 // ...
 
-void* tree_sitter_my_language_external_scanner_create() {
+void *tree_sitter_my_language_external_scanner_create(void) {
   return ts_calloc(100, 1); // or ts_malloc(100)
 }
 
@@ -921,7 +921,7 @@ enum TokenType {
 
 // Create the array in your create function
 
-void* tree_sitter_my_language_external_scanner_create() {
+void *tree_sitter_my_language_external_scanner_create(void) {
   return ts_calloc(1, sizeof(Array(int)));
 
   // or if you want to zero out the memory yourself