diff --git a/src/repr/src/refresh_schedule.rs b/src/repr/src/refresh_schedule.rs
index 94bfbe077b39f..bdd4a3e386e2e 100644
--- a/src/repr/src/refresh_schedule.rs
+++ b/src/repr/src/refresh_schedule.rs
@@ -83,7 +83,7 @@ impl RefreshSchedule {
 
 #[derive(Clone, Debug, Serialize, Deserialize, Eq, PartialEq, Ord, PartialOrd)]
 pub struct RefreshEvery {
-    pub interval: Duration,
+    pub interval: Duration, // must be at least 1 ms
     pub aligned_to: Timestamp,
 }
 
diff --git a/src/sql/src/plan/statement/ddl.rs b/src/sql/src/plan/statement/ddl.rs
index a298ffd3da76a..70b6f24b8555f 100644
--- a/src/sql/src/plan/statement/ddl.rs
+++ b/src/sql/src/plan/statement/ddl.rs
@@ -2837,7 +2837,7 @@ pub fn plan_create_materialized_view(
                 }
                 RefreshOptionValue::AtCreation => {
                     soft_panic_or_log!("REFRESH AT CREATION should have been purified away");
-                    sql_bail!("INTERNAL ERROR: REFRESH AT CREATION should have been purified away")
+                    bail_internal!("REFRESH AT CREATION should have been purified away")
                 }
                 RefreshOptionValue::At(RefreshAtOptionValue { mut time }) => {
                     transform_ast::transform(scx, &mut time)?; // Desugar the expression
@@ -2881,6 +2881,9 @@ pub fn plan_create_materialized_view(
                     if u64::try_from(interval.as_millis()).is_err() {
                         sql_bail!("REFRESH interval too large");
                     }
+                    if interval.as_micros() < 1000 {
+                        sql_bail!("REFRESH interval must be at least 1 ms")
+                    }
 
                     let mut aligned_to = match aligned_to {
                         Some(aligned_to) => aligned_to,
diff --git a/test/sqllogictest/materialized_views.slt b/test/sqllogictest/materialized_views.slt
index dc69c8a2fb4ea..b5eb023a62288 100644
--- a/test/sqllogictest/materialized_views.slt
+++ b/test/sqllogictest/materialized_views.slt
@@ -748,6 +748,11 @@ CREATE MATERIALIZED VIEW mv_bad WITH (REFRESH EVERY ASSERT NOT NULL x) AS SELECT
 query error invalid input syntax for type interval: Overflows maximum days; cannot exceed 2147483647/\-2147483648 days: "213503982001"
 CREATE MATERIALIZED VIEW mv_bad WITH (REFRESH EVERY '213503982001' days) AS SELECT * FROM t2;
 
+query error REFRESH interval must be at least 1 ms
+CREATE MATERIALIZED VIEW mv_bad
+  WITH (REFRESH EVERY '999 microseconds')
+  AS SELECT 1;
+
 # This tests that we don't forget to purify EXPLAIN CREATE MATERIALIZED VIEW
 statement ok
 EXPLAIN OPTIMIZED PLAN WITH (humanized expressions) AS VERBOSE TEXT FOR CREATE MATERIALIZED VIEW mv_explain WITH (REFRESH EVERY '2 seconds') AS SELECT * FROM t2;