diff --git a/repos/base/src/core/ram_session_component.cc b/repos/base/src/core/ram_session_component.cc
index d49170f67..35d4605a9 100644
--- a/repos/base/src/core/ram_session_component.cc
+++ b/repos/base/src/core/ram_session_component.cc
@@ -196,7 +196,7 @@ Ram_dataspace_capability Ram_session_component::alloc(size_t ds_size, Cache_attr
 		ds = new (&_ds_slab)
 			Dataspace_component(ds_size, (addr_t)ds_addr, cached, true, this);
 	} catch (Allocator::Out_of_memory) {
-		warning("Could not allocate metadata");
+		warning("could not allocate metadata");
 		/* cleanup unneeded resources */
 		_ram_alloc->free(ds_addr);
 
@@ -303,7 +303,7 @@ Ram_session_component::~Ram_session_component()
 	     _free_ds(ds->cap()));
 
 	if (_payload != 0)
-		warning("Remaining payload of ", _payload, " in ram session to destroy");
+		warning("remaining payload of ", _payload, " in ram session to destroy");
 
 	if (!_ref_account) return;
 
diff --git a/repos/base/src/lib/base/sliced_heap.cc b/repos/base/src/lib/base/sliced_heap.cc
index e9a5647d1..f979e8032 100644
--- a/repos/base/src/lib/base/sliced_heap.cc
+++ b/repos/base/src/lib/base/sliced_heap.cc
@@ -50,11 +50,11 @@ bool Sliced_heap::alloc(size_t size, void **out_addr)
 		ds_cap = _ram_session.alloc(size);
 		block  = _region_map.attach(ds_cap);
 	} catch (Region_map::Attach_failed) {
-		error("Could not attach dataspace to local address space");
+		error("could not attach dataspace to local address space");
 		_ram_session.free(ds_cap);
 		return false;
 	} catch (Ram_session::Alloc_failed) {
-		error("Could not allocate dataspace with size %lu", size);
+		error("could not allocate dataspace with size ", size);
 		return false;
 	}