diff --git a/src/services/user-prompt/user-prompt-manager.ts b/src/services/user-prompt/user-prompt-manager.ts
index 101f548b..b9e78814 100644
--- a/src/services/user-prompt/user-prompt-manager.ts
+++ b/src/services/user-prompt/user-prompt-manager.ts
@@ -335,8 +335,10 @@ export class UserPromptManager {
     const db = await this.ready();
     const rows = projectPath
       ? await db.all(
-          `SELECT * FROM user_prompts WHERE captured = 1 AND project_path = ? ORDER BY created_at DESC`,
-          [projectPath]
+          `SELECT * FROM user_prompts
+           WHERE captured = 1 AND REPLACE(project_path, '\\', '/') = ?
+           ORDER BY created_at DESC`,
+          [projectPath.replace(/\\/g, "/")]
         )
       : await db.all(`SELECT * FROM user_prompts WHERE captured = 1 ORDER BY created_at DESC`);
     return rows.map((row) => this.rowToPrompt(row));
@@ -351,8 +353,8 @@ export class UserPromptManager {
     const params: InValue[] = [`%${query}%`];
     let sql = `SELECT * FROM user_prompts WHERE content LIKE ? AND captured = 1`;
     if (projectPath) {
-      sql += ` AND project_path = ?`;
-      params.push(projectPath);
+      sql += ` AND REPLACE(project_path, '\\', '/') = ?`;
+      params.push(projectPath.replace(/\\/g, "/"));
     }
     sql += ` ORDER BY created_at DESC LIMIT ?`;
     params.push(limit);
diff --git a/tests/user-prompt-path-normalization.test.ts b/tests/user-prompt-path-normalization.test.ts
new file mode 100644
index 00000000..0b11bcc9
--- /dev/null
+++ b/tests/user-prompt-path-normalization.test.ts
@@ -0,0 +1,79 @@
+import { afterAll, beforeEach, afterEach, describe, expect, it } from "bun:test";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import type { TursoDb } from "../src/services/turso/turso-db.js";
+
+const sandbox = mkdtempSync(join(tmpdir(), "opencode-mem-path-home-"));
+const originalHome = process.env.HOME;
+const originalUserProfile = process.env.USERPROFILE;
+process.env.HOME = sandbox;
+process.env.USERPROFILE = sandbox;
+
+const { UserPromptManager } = await import("../src/services/user-prompt/user-prompt-manager.js");
+
+type TestableManager = InstanceType<typeof UserPromptManager> & {
+  ready(): Promise<TursoDb>;
+};
+
+afterAll(() => {
+  process.env.HOME = originalHome;
+  process.env.USERPROFILE = originalUserProfile;
+  try {
+    rmSync(sandbox, { recursive: true, force: true });
+  } catch {
+    // ignore
+  }
+});
+
+describe("UserPromptManager project path normalization", () => {
+  let mgr: TestableManager;
+  let activeIds: string[];
+
+  beforeEach(() => {
+    mgr = new UserPromptManager() as TestableManager;
+    activeIds = [];
+  });
+
+  afterEach(async () => {
+    for (const id of activeIds) {
+      try {
+        await mgr.deletePrompt(id);
+      } catch {
+        // ignore
+      }
+    }
+  });
+
+  async function saveCapturedPrompt(projectPath: string) {
+    const id = await mgr.savePrompt(
+      "session-path-test",
+      `msg-${Date.now()}-${Math.random()}`,
+      projectPath,
+      "hello"
+    );
+    await mgr.markAsCaptured(id);
+    activeIds.push(id);
+    return id;
+  }
+
+  it("getCapturedPrompts matches paths regardless of separator style", async () => {
+    const storedPath = "C:\\workspace\\proj";
+    await saveCapturedPrompt(storedPath);
+
+    const forwardSlashQuery = await mgr.getCapturedPrompts("C:/workspace/proj");
+    expect(forwardSlashQuery).toHaveLength(1);
+
+    const backslashQuery = await mgr.getCapturedPrompts("C:\\workspace\\proj");
+    expect(backslashQuery).toHaveLength(1);
+  });
+
+  it("searchPrompts matches paths regardless of separator style", async () => {
+    const storedPath = "D:\\repos\\app";
+    await saveCapturedPrompt(storedPath);
+
+    const results = await mgr.searchPrompts("hello", "D:/repos/app");
+    expect(results).toHaveLength(1);
+    expect(results[0]?.content).toBe("hello");
+  });
+});