diff --git a/include/SDL3_rtf/SDL_rtf.h b/include/SDL3_rtf/SDL_rtf.h
index e512c22..1311159 100644
--- a/include/SDL3_rtf/SDL_rtf.h
+++ b/include/SDL3_rtf/SDL_rtf.h
@@ -147,19 +147,19 @@ extern SDL_DECLSPEC RTF_Context * SDLCALL RTF_CreateContext(SDL_Renderer *render
  *
  * \param ctx the RTF context to update.
  * \param file the file path to load RTF data from.
- * \returns SDL_TRUE on success or SDL_FALSE on failure; call SDL_GetError()
+ * \returns true on success or false on failure; call SDL_GetError()
  *          for more information.
  *
  * \since This function is available since SDL_rtf 3.0.0.
  */
-extern SDL_DECLSPEC SDL_bool SDLCALL RTF_Load(RTF_Context *ctx, const char *file);
+extern SDL_DECLSPEC bool SDLCALL RTF_Load(RTF_Context *ctx, const char *file);
 
 /**
  * Set the text of an RTF context, with data loaded from an SDL_IOStream.
  *
  * This can be called multiple times to change the text displayed.
  *
- * If `closeio` is SDL_TRUE, this function will close `src`, whether this
+ * If `closeio` is true, this function will close `src`, whether this
  * function succeeded or not.
  *
  * On failure, call RTF_GetError() to get a human-readable text message
@@ -167,14 +167,14 @@ extern SDL_DECLSPEC SDL_bool SDLCALL RTF_Load(RTF_Context *ctx, const char *file
  *
  * \param ctx the RTF context to update.
  * \param src the SDL_IOStream to load RTF data from.
- * \param closeio SDL_TRUE to close `src` when the font is closed, SDL_FALSE
+ * \param closeio true to close `src` when the font is closed, false
  *                to leave it open.
- * \returns SDL_TRUE on success or SDL_FALSE on failure; call SDL_GetError()
+ * \returns true on success or false on failure; call SDL_GetError()
  *          for more information.
  *
  * \since This function is available since SDL_rtf 3.0.0.
  */
-extern SDL_DECLSPEC SDL_bool SDLCALL RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, SDL_bool closeio);
+extern SDL_DECLSPEC bool SDLCALL RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, bool closeio);
 
 /**
  * Get the title of an RTF document.
diff --git a/src/SDL_rtf.c b/src/SDL_rtf.c
index 2fb8d83..a82d6a3 100644
--- a/src/SDL_rtf.c
+++ b/src/SDL_rtf.c
@@ -63,12 +63,12 @@ RTF_Context *RTF_CreateContext(SDL_Renderer *renderer, RTF_FontEngine *fontEngin
 }
 
 /* Set the text of an RTF context.
- * This function returns SDL_TRUE if it succeeds or SDL_FALSE if it fails.
+ * This function returns true if it succeeds or false if it fails.
  * Use SDL_GetError() to get a text message corresponding to the error.
  */
-SDL_bool RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, SDL_bool closeio)
+bool RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, bool closeio)
 {
-    SDL_bool retval;
+    bool retval;
 
     ecClearContext(ctx);
 
@@ -83,7 +83,7 @@ SDL_bool RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, SDL_bool closeio)
     /* Parse the RTF text and clean up */
     switch (ecRtfParse(ctx)) {
         case ecOK:
-            retval = SDL_TRUE;
+            retval = true;
             break;
         case ecStackUnderflow:
             retval = SDL_SetError("Unmatched '}'");
@@ -124,11 +124,11 @@ SDL_bool RTF_Load_IO(RTF_Context *ctx, SDL_IOStream *src, SDL_bool closeio)
     return retval;
 }
 
-SDL_bool RTF_Load(RTF_Context *ctx, const char *file)
+bool RTF_Load(RTF_Context *ctx, const char *file)
 {
     SDL_IOStream *src = SDL_IOFromFile(file, "rb");
     if (!src) {
-        return SDL_FALSE;
+        return false;
     }
     return RTF_Load_IO(ctx, src, 1);
 }