diff --git a/repos/base/src/lib/base/heap.cc b/repos/base/src/lib/base/heap.cc
index 370ad2ef8..11bd07539 100644
--- a/repos/base/src/lib/base/heap.cc
+++ b/repos/base/src/lib/base/heap.cc
@@ -221,7 +221,7 @@ bool Heap::_unsynchronized_alloc(size_t size, void **out_addr)
 bool Heap::alloc(size_t size, void **out_addr)
 {
 	if (size == 0)
-		error("attempt to allocated zero-size block from heap");
+		error("attempt to allocate zero-size block from heap");
 
 	/* serialize access of heap functions */
 	Lock::Guard lock_guard(_lock);