diff --git a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/ApiDocumentationProfile.java b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/ApiDocumentationProfile.java
index 1ed63a9bd96..93452589ace 100644
--- a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/ApiDocumentationProfile.java
+++ b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/ApiDocumentationProfile.java
@@ -11,7 +11,7 @@ public enum ApiDocumentationProfile implements DocumentedEnum<ApiDocumentationPr
     List of available custom documentation profiles. A profile is used to inject custom
     documentation like type and field description or a deprecated reason.
     
-    Currently, ONLY the Transmodel API support this feature.
+    Currently, ONLY the Transmodel API supports this feature.
     """;
 
   @Override
diff --git a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/CustomDocumentation.java b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/CustomDocumentation.java
index 44629659b96..b688a546a56 100644
--- a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/CustomDocumentation.java
+++ b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/CustomDocumentation.java
@@ -29,7 +29,7 @@ public class CustomDocumentation {
   private final Map<String, String> textMap;
 
   /**
-   * Pacakge local to be unit-testable
+   * Package local to be unit-testable
    */
   CustomDocumentation(Map<String, String> textMap) {
     this.textMap = textMap;
diff --git a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentation.java b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentation.java
index f2793a4e6c3..edc14986c22 100644
--- a/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentation.java
+++ b/application/src/main/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentation.java
@@ -21,7 +21,7 @@
 import java.util.function.BiFunction;
 
 /**
- * This is GraphQL visitor witch inject custom documentation on types and fields.
+ * This is GraphQL visitor which injects custom documentation on types and fields.
  */
 public class InjectCustomDocumentation
   extends GraphQLTypeVisitorStub
diff --git a/application/src/test/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentationTest.java b/application/src/test/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentationTest.java
index 4231d7079e5..44318d613a4 100644
--- a/application/src/test/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentationTest.java
+++ b/application/src/test/java/org/opentripplanner/apis/support/graphql/injectdoc/InjectCustomDocumentationTest.java
@@ -21,7 +21,7 @@
 import org.opentripplanner._support.text.TextAssertions;
 
 /**
- * This test read in a schema file, inject documentation and convert the
+ * This test reads in a schema file, injects documentation and convert the
  * new schema to an SDL text string. The result is then compared to the
  * "expected" SDL file. The input and expected files are found in the
  * resources - with the same name as this test.