diff --git a/src/services/platforms/CapacitorPlatformService.ts b/src/services/platforms/CapacitorPlatformService.ts
index e004147f..d67187b8 100644
--- a/src/services/platforms/CapacitorPlatformService.ts
+++ b/src/services/platforms/CapacitorPlatformService.ts
@@ -179,11 +179,28 @@ export class CapacitorPlatformService implements PlatformService {
     sql: string,
     params: unknown[] = [],
   ): Promise<R> {
+    // Convert parameters to SQLite-compatible types
+    const convertedParams = params.map((param) => {
+      if (param === null || param === undefined) {
+        return null;
+      }
+      if (typeof param === 'object' && param !== null) {
+        // Convert objects and arrays to JSON strings
+        return JSON.stringify(param);
+      }
+      if (typeof param === 'boolean') {
+        // Convert boolean to integer (0 or 1)
+        return param ? 1 : 0;
+      }
+      // Numbers, strings, bigints, and buffers are already supported
+      return param;
+    });
+
     return new Promise<R>((resolve, reject) => {
       const operation: QueuedOperation = {
         type,
         sql,
-        params,
+        params: convertedParams,
         resolve: (value: unknown) => resolve(value as R),
         reject,
       };