diff --git a/api.py b/api.py
index fd710df4..438cd069 100644
--- a/api.py
+++ b/api.py
@@ -915,9 +915,9 @@ def version_4_cli(
     volume_scale=1.0,
     strain_effect=0.0,
     shouting_type="normal",  # normal, loud, soft, whisper
-    intesity = 0,
+    intensity = 0,
 ):
-    print(f"version 4 cli func: the intestiy is {intesity}")
+    print(f"version 4 cli func: the intestiy is {intensity}")
     # Create a temporary buffer to store the audio
     audio_buffer = io.BytesIO()
 
@@ -979,7 +979,7 @@ def version_4_cli(
         energy_scale=energy_scale,
         volume_scale=volume_scale,
         strain_effect=strain_effect,
-        intensity=intesity
+        intensity=intensity
     )
     
     # Get the last audio data and sample rate from synthesis result
@@ -1018,7 +1018,7 @@ async def tts_endpoint(
     volume_scale: str = "1.0",  # Accept as string from URL, convert to float
     strain_effect: str = "0.0",  # Accept as string from URL, convert to float
     shouting_type: str = "normal",  # Accept as string from URL, convert to appropriate type
-    intesity: str = "0.0",
+    intensity: str = "0.0",
 ):
     if character == "kurari" or character == "Kurari":
         prompt_text = "おはよう〜。今日はどんな1日過ごすー？くらりはね〜いつでもあなたの味方だよ"
@@ -1063,8 +1063,9 @@ async def tts_endpoint(
         energy_scale = float(energy_scale)
         volume_scale = float(volume_scale)
         strain_effect = float(strain_effect)
+        intensity = float(intensity)
 
-        print(f"Tts endpoint func: the intesty is {intesity}")
+        print(f"Tts endpoint func: the intesty is {intensity}")
 
         audio_buffer, sample_rate = version_4_cli(
             character_name=character,
@@ -1080,7 +1081,7 @@ async def tts_endpoint(
             volume_scale=volume_scale,
             strain_effect=strain_effect,
             shouting_type= shouting_type,
-            intesity=intesity
+            intensity=intensity
         )
 
         if audio_buffer: