diff --git a/src/option/from_stream.rs b/src/option/from_stream.rs
index dc6d841..f0aafea 100644
--- a/src/option/from_stream.rs
+++ b/src/option/from_stream.rs
@@ -24,6 +24,7 @@ where
                 .take_while(|elem| {
                     elem.is_some() || {
                         found_none = true;
+                        // Stop processing the stream on `None`
                         false
                     }
                 })
diff --git a/src/option/product.rs b/src/option/product.rs
index ff61eaa..2238a91 100644
--- a/src/option/product.rs
+++ b/src/option/product.rs
@@ -48,6 +48,7 @@ where
                     .take_while(|elem| {
                         elem.is_some() || {
                             found_none = true;
+                            // Stop processing the stream on `None`
                             false
                         }
                     })
diff --git a/src/option/sum.rs b/src/option/sum.rs
index cd92f78..0570a1e 100644
--- a/src/option/sum.rs
+++ b/src/option/sum.rs
@@ -43,6 +43,7 @@ where
                     .take_while(|elem| {
                         elem.is_some() || {
                             found_none = true;
+                            // Stop processing the stream on error
                             false
                         }
                     })