diff --git a/repos/dde_rump/src/lib/rump/bootstrap.cc b/repos/dde_rump/src/lib/rump/bootstrap.cc
index 5c706fe6f..fe22ec966 100644
--- a/repos/dde_rump/src/lib/rump/bootstrap.cc
+++ b/repos/dde_rump/src/lib/rump/bootstrap.cc
@@ -158,7 +158,7 @@ struct Sym_tab
 			if (sym->st_shndx == SHN_UNDEF || !sym->st_value)
 				continue;
 	
-			char const *name = (char const *)sym->st_name + str_tab;
+			char const *name = (char const *)(sym->st_name + str_tab);
 			if (!is_wanted(name))
 				continue;
 
@@ -166,7 +166,7 @@ struct Sym_tab
 			/* set absolute value */
 			sym_tab[out_cnt].st_value += map->l_addr; 
 			if (verbose)
-				PDBG("Read symbol %s val: %x", name, sym_tab[out_cnt].st_value);
+				PDBG("Read symbol %s val: %zx", name, sym_tab[out_cnt].st_value);
 			out_cnt++;
 		}
 	}
diff --git a/repos/dde_rump/src/lib/rump/hypercall.cc b/repos/dde_rump/src/lib/rump/hypercall.cc
index a75de708a..6f5d099ad 100644
--- a/repos/dde_rump/src/lib/rump/hypercall.cc
+++ b/repos/dde_rump/src/lib/rump/hypercall.cc
@@ -103,7 +103,7 @@ struct lwp * rumpuser_curlwp(void)
 int rumpuser_thread_create(func f, void *arg, const char *name,
                            int mustjoin, int priority, int cpui_dx, void **cookie)
 {
-	static int count = 0;
+	static long count = 0;
 
 	if (mustjoin)
 		*cookie = (void *)++count;