diff --git a/internal/translator/gemini/gemini/gemini_gemini_request.go b/internal/translator/gemini/gemini/gemini_gemini_request.go
index c4aa5029..92b69374 100644
--- a/internal/translator/gemini/gemini/gemini_gemini_request.go
+++ b/internal/translator/gemini/gemini/gemini_gemini_request.go
@@ -30,13 +30,16 @@ func ConvertGeminiRequestToGemini(_ string, inputRawJSON []byte, _ bool) []byte
 	if toolsResult.Exists() && toolsResult.IsArray() {
 		toolResults := toolsResult.Array()
 		for i := 0; i < len(toolResults); i++ {
+			strJson, _ := util.RenameKey(string(rawJSON), fmt.Sprintf("tools.%d.functionDeclarations", i), fmt.Sprintf("tools.%d.function_declarations", i))
+			rawJSON = []byte(strJson)
+
 			functionDeclarationsResult := gjson.GetBytes(rawJSON, fmt.Sprintf("tools.%d.function_declarations", i))
 			if functionDeclarationsResult.Exists() && functionDeclarationsResult.IsArray() {
 				functionDeclarationsResults := functionDeclarationsResult.Array()
 				for j := 0; j < len(functionDeclarationsResults); j++ {
 					parametersResult := gjson.GetBytes(rawJSON, fmt.Sprintf("tools.%d.function_declarations.%d.parameters", i, j))
 					if parametersResult.Exists() {
-						strJson, _ := util.RenameKey(string(rawJSON), fmt.Sprintf("tools.%d.function_declarations.%d.parameters", i, j), fmt.Sprintf("tools.%d.function_declarations.%d.parametersJsonSchema", i, j))
+						strJson, _ = util.RenameKey(string(rawJSON), fmt.Sprintf("tools.%d.function_declarations.%d.parameters", i, j), fmt.Sprintf("tools.%d.function_declarations.%d.parametersJsonSchema", i, j))
 						rawJSON = []byte(strJson)
 					}
 				}
@@ -87,6 +90,5 @@ func ConvertGeminiRequestToGemini(_ string, inputRawJSON []byte, _ bool) []byte
 	})
 
 	out = common.AttachDefaultSafetySettings(out, "safetySettings")
-
 	return out
 }