diff --git a/sqlx-mysql/src/connection/executor.rs b/sqlx-mysql/src/connection/executor.rs
index 4f5af4bf6d..d08d78147c 100644
--- a/sqlx-mysql/src/connection/executor.rs
+++ b/sqlx-mysql/src/connection/executor.rs
@@ -123,6 +123,14 @@ impl MySqlConnection {
                         .get_or_prepare_statement(sql)
                         .await?;
 
+                    if arguments.types.len() != metadata.parameters {
+                        return Err(Error::Protocol(format!(
+                                    "Prepared statement expected {} parameters but {} parameters were provided",
+                                    metadata.parameters,
+                                    arguments.types.len()
+                        )));
+                    }
+
                     // https://dev.mysql.com/doc/internals/en/com-stmt-execute.html
                     self.inner.stream
                         .send_packet(StatementExecute {
@@ -137,6 +145,14 @@ impl MySqlConnection {
                         .prepare_statement(sql)
                         .await?;
 
+                    if arguments.types.len() != metadata.parameters {
+                        return Err(Error::Protocol(format!(
+                                    "Prepared statement expected {} parameters but {} parameters were provided",
+                                    metadata.parameters,
+                                    arguments.types.len()
+                        )));
+                    }
+
                     // https://dev.mysql.com/doc/internals/en/com-stmt-execute.html
                     self.inner.stream
                         .send_packet(StatementExecute {