diff --git a/internal/backend/remote-state/s3/backend.go b/internal/backend/remote-state/s3/backend.go
index f1d0345562..ccb340c6f5 100644
--- a/internal/backend/remote-state/s3/backend.go
+++ b/internal/backend/remote-state/s3/backend.go
@@ -126,7 +126,7 @@ func (b *Backend) ConfigSchema() *configschema.Block {
 				Description: "MFA token",
 			},
 			"skip_credentials_validation": {
-				Type:        cty.String,
+				Type:        cty.Bool,
 				Optional:    true,
 				Description: "Skip the credentials validation via STS API.",
 			},