diff --git a/src/core/prompts/responses.ts b/src/core/prompts/responses.ts
index b4591bc422..a72de0a9ae 100644
--- a/src/core/prompts/responses.ts
+++ b/src/core/prompts/responses.ts
@@ -16,8 +16,8 @@ export const formatResponse = {
 
 	toolError: (error?: string, toolName?: string) => {
 		const title = toolName
-			? t("tools:errors.toolCallError", { toolName, defaultValue: `Tool Call Error: ${toolName}` })
-			: t("tools:errors.toolExecutionError", { defaultValue: "Tool Execution Error" })
+			? t("tools:errors.toolCallError", { toolName, defaultValue: `Tool call error: ${toolName}` })
+			: t("tools:errors.toolExecutionError", { defaultValue: "Tool execution error" })
 		return `${title}\n<error>\n${error}\n</error>`
 	},
 
diff --git a/src/core/tools/insertContentTool.ts b/src/core/tools/insertContentTool.ts
index 8aa2ba65c0..7935144553 100644
--- a/src/core/tools/insertContentTool.ts
+++ b/src/core/tools/insertContentTool.ts
@@ -12,6 +12,7 @@ import { fileExistsAtPath } from "../../utils/fs"
 import { insertGroups } from "../diff/insert-groups"
 import { DEFAULT_WRITE_DELAY_MS } from "@roo-code/types"
 import { EXPERIMENT_IDS, experiments } from "../../shared/experiments"
+import { t } from "../../i18n"
 
 export async function insertContentTool(
 	cline: Task,
@@ -90,7 +91,7 @@ export async function insertContentTool(
 				cline.recordToolError("insert_content")
 				const formattedError = `Cannot insert content at line ${lineNumber} into a non-existent file. For new files, 'line' must be 0 (to append) or 1 (to insert at the beginning).`
 				await cline.say("error", formattedError, undefined, undefined, undefined, undefined, {
-					title: "Invalid Line Number",
+					title: t("tools:errors.invalidLineNumber"),
 				})
 				pushToolResult(formattedError)
 				return
diff --git a/src/i18n/locales/en/tools.json b/src/i18n/locales/en/tools.json
index 61a8af8a9a..61dce5c187 100644
--- a/src/i18n/locales/en/tools.json
+++ b/src/i18n/locales/en/tools.json
@@ -16,25 +16,27 @@
 		}
 	},
 	"errors": {
+		"toolCallError": "Tool call error: {{toolName}}",
+		"toolExecutionError": "Tool execution error",
 		"fileNotFound": "File not found",
-		"parseError": "Parse Error",
-		"commandTimeout": "Command Timeout",
-		"permissionDenied": "Permission Denied",
-		"networkError": "Network Error",
-		"invalidInput": "Invalid Input",
-		"operationFailed": "Operation Failed",
-		"resourceNotFound": "Resource Not Found",
-		"configurationError": "Configuration Error",
-		"authenticationFailed": "Authentication Failed",
-		"invalidLineNumber": "Invalid Line Number",
+		"parseError": "Parse error",
+		"commandTimeout": "Command timeout",
+		"permissionDenied": "Permission denied",
+		"networkError": "Network error",
+		"invalidInput": "Invalid input",
+		"operationFailed": "Operation failed",
+		"resourceNotFound": "Resource not found",
+		"configurationError": "Configuration error",
+		"authenticationFailed": "Authentication failed",
+		"invalidLineNumber": "Invalid line number",
 		"fileAlreadyExists": "File already exists",
-		"directoryNotFound": "Directory Not Found",
-		"invalidPath": "Invalid Path",
-		"readError": "Read Error",
-		"writeError": "Write Error",
-		"syntaxError": "Syntax Error",
-		"validationError": "Validation Error",
-		"timeoutError": "Timeout Error",
-		"connectionError": "Connection Error"
+		"directoryNotFound": "Directory not found",
+		"invalidPath": "Invalid path",
+		"readError": "Read error",
+		"writeError": "Write error",
+		"syntaxError": "Syntax error",
+		"validationError": "Validation error",
+		"timeoutError": "Timeout error",
+		"connectionError": "Connection error"
 	}
 }