diff --git a/Sources/SQLite/Core/Statement.swift b/Sources/SQLite/Core/Statement.swift
index a9232bba..3507b594 100644
--- a/Sources/SQLite/Core/Statement.swift
+++ b/Sources/SQLite/Core/Statement.swift
@@ -203,7 +203,12 @@ extension Statement : Sequence {
 extension Statement : IteratorProtocol {
 
     public func next() -> [Binding?]? {
-        return try! step() ? Array(row) : nil
+        do {
+            return try step() ? Array(row) : nil
+        } catch {
+            assert(false, "Error in Statement.next(): \(error)")
+            return nil
+        }
     }
 
 }