diff --git a/cmd/tools/bench/wyhash.v b/cmd/tools/bench/wyhash.v
index b760ad6b55..10d7e6b0df 100644
--- a/cmd/tools/bench/wyhash.v
+++ b/cmd/tools/bench/wyhash.v
@@ -6,6 +6,9 @@ import rand
 import benchmark
 
 fn main() {
+	_ := map{
+		1: 1
+	}
 	rand.seed([u32(42), 0])
 	sample_size := 10000000
 	min_str_len := 20
diff --git a/cmd/tools/vwipe-cache.v b/cmd/tools/vwipe-cache.v
index 988b7c262a..0715ee0706 100644
--- a/cmd/tools/vwipe-cache.v
+++ b/cmd/tools/vwipe-cache.v
@@ -4,6 +4,9 @@ import os
 import v.vcache
 
 fn main() {
+	_ := map{
+		1: 1
+	}
 	mut cm := vcache.new_cache_manager([])
 	cpath := cm.basepath
 	if os.exists(cpath) && os.is_dir(cpath) {