diff --git a/lib/middleware-common/src/metering.rs b/lib/middleware-common/src/metering.rs
index 08806f593..e9f02d509 100644
--- a/lib/middleware-common/src/metering.rs
+++ b/lib/middleware-common/src/metering.rs
@@ -247,7 +247,7 @@ mod tests {
         // verify it returns the correct value
         assert_eq!(value, 7);
 
-        // verify is uses the correct number of points
+        // verify it used the correct number of points
         assert_eq!(get_points_used(&instance), 74);
     }
 
@@ -276,7 +276,7 @@ mod tests {
             _ => unreachable!(),
         }
 
-        // verify is uses the correct number of points
+        // verify it used the correct number of points
         assert_eq!(get_points_used(&instance), 109); // Used points will be slightly more than `limit` because of the way we do gas checking.
     }
 
diff --git a/lib/runtime-core/src/error.rs b/lib/runtime-core/src/error.rs
index c93115d14..f07620b23 100644
--- a/lib/runtime-core/src/error.rs
+++ b/lib/runtime-core/src/error.rs
@@ -134,7 +134,7 @@ impl std::fmt::Display for RuntimeError {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
         match self {
             RuntimeError::Trap { ref msg } => {
-                write!(f, "WebAssembly trap occured during runtime: {}", msg)
+                write!(f, "WebAssembly trap occurred during runtime: {}", msg)
             }
             RuntimeError::Error { data } => {
                 if let Some(s) = data.downcast_ref::<String>() {