diff --git a/cli/command/system/prune.go b/cli/command/system/prune.go
index 9a4e88fd77..fdc3ffc3f0 100644
--- a/cli/command/system/prune.go
+++ b/cli/command/system/prune.go
@@ -125,7 +125,7 @@ func confirmationMessage(dockerCli command.Cli, options pruneOptions) string {
 		if options.all {
 			warnings = append(warnings, "all build cache")
 		} else {
-			warnings = append(warnings, "all dangling build cache")
+			warnings = append(warnings, "unused build cache")
 		}
 	}
 
diff --git a/cli/command/system/prune_test.go b/cli/command/system/prune_test.go
index 65ceacbee5..ff0f7ae699 100644
--- a/cli/command/system/prune_test.go
+++ b/cli/command/system/prune_test.go
@@ -36,7 +36,7 @@ func TestPrunePromptFilters(t *testing.T) {
   - all stopped containers
   - all networks not used by at least one container
   - all dangling images
-  - all dangling build cache
+  - unused build cache
 
   Items to be pruned will be filtered with:
   - label!=foo=bar
diff --git a/docs/reference/commandline/system_prune.md b/docs/reference/commandline/system_prune.md
index 728cb87fce..4c3ff284ac 100644
--- a/docs/reference/commandline/system_prune.md
+++ b/docs/reference/commandline/system_prune.md
@@ -29,7 +29,7 @@ WARNING! This will remove:
         - all stopped containers
         - all networks not used by at least one container
         - all dangling images
-        - all build cache
+        - unused build cache
 Are you sure you want to continue? [y/N] y
 
 Deleted Containers: