diff --git a/lib/isc/loop.c b/lib/isc/loop.c
index 2872ed6ba2..2e09a37e72 100644
--- a/lib/isc/loop.c
+++ b/lib/isc/loop.c
@@ -351,10 +351,7 @@ threadpool_initialize(uint32_t workers) {
 	int r = uv_os_getenv("UV_THREADPOOL_SIZE", buf,
 			     &(size_t){ sizeof(buf) });
 	if (r == UV_ENOENT) {
-		/* FIXME The number of threadpool threads has been temporarily
-		 * doubled to work around the issue [GL #4898] until a proper
-		 * solution is implemented. */
-		snprintf(buf, sizeof(buf), "%" PRIu32, 2 * workers);
+		snprintf(buf, sizeof(buf), "%" PRIu32, workers);
 		uv_os_setenv("UV_THREADPOOL_SIZE", buf);
 	}
 }