diff --git a/src/main/java/com/google/devtools/build/lib/analysis/actions/CustomCommandLine.java b/src/main/java/com/google/devtools/build/lib/analysis/actions/CustomCommandLine.java
index 008f7de..02998a1 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/actions/CustomCommandLine.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/actions/CustomCommandLine.java
@@ -76,24 +76,11 @@
     abstract void eval(ImmutableList.Builder<String> builder);
   }
 
-  // TODO(bazel-team): CustomArgv and CustomMultiArgv is  going to be difficult to expose
+  // TODO(bazel-team): CustomMultiArgv is  going to be difficult to expose
   // in Skylark. Maybe we can get rid of them by refactoring JavaCompileAction. It also
   // raises immutability / serialization issues.
-  /** Custom Java code producing a String argument. Usage of this class is discouraged. */
-  public abstract static class CustomArgv extends StandardArgvFragment {
-
-    @Override
-    void eval(ImmutableList.Builder<String> builder) {
-      builder.add(argv());
-    }
-
-    public abstract String argv();
-  }
-
   /**
    * Custom Java code producing a List of String arguments.
-   *
-   * <p>Usage of this class is discouraged. Please see {@link CustomArgv}.
    */
   public abstract static class CustomMultiArgv extends StandardArgvFragment {
 
@@ -828,13 +815,6 @@
       return this;
     }
 
-    public Builder addCustomArgv(@Nullable CustomArgv arg) {
-      if (arg != null) {
-        arguments.add(arg);
-      }
-      return this;
-    }
-
     public Builder addCustomMultiArgv(@Nullable CustomMultiArgv arg) {
       if (arg != null) {
         arguments.add(arg);
diff --git a/src/test/java/com/google/devtools/build/lib/actions/CustomCommandLineTest.java b/src/test/java/com/google/devtools/build/lib/actions/CustomCommandLineTest.java
index b563b4c..6b1b9e6 100644
--- a/src/test/java/com/google/devtools/build/lib/actions/CustomCommandLineTest.java
+++ b/src/test/java/com/google/devtools/build/lib/actions/CustomCommandLineTest.java
@@ -22,7 +22,6 @@
 import com.google.devtools.build.lib.actions.Artifact.SpecialArtifactType;
 import com.google.devtools.build.lib.actions.Artifact.TreeFileArtifact;
 import com.google.devtools.build.lib.analysis.actions.CustomCommandLine;
-import com.google.devtools.build.lib.analysis.actions.CustomCommandLine.CustomArgv;
 import com.google.devtools.build.lib.analysis.actions.CustomCommandLine.CustomMultiArgv;
 import com.google.devtools.build.lib.analysis.actions.CustomCommandLine.VectorArg;
 import com.google.devtools.build.lib.cmdline.Label;
@@ -161,21 +160,6 @@
   }
 
   @Test
-  public void testCustomArgs() {
-    CustomCommandLine cl =
-        CustomCommandLine.builder()
-            .addCustomArgv(
-                new CustomArgv() {
-                  @Override
-                  public String argv() {
-                    return "--arg";
-                  }
-                })
-            .build();
-    assertThat(cl.arguments()).isEqualTo(ImmutableList.of("--arg"));
-  }
-
-  @Test
   public void testCustomMultiArgs() {
     CustomCommandLine cl =
         CustomCommandLine.builder()
@@ -259,7 +243,6 @@
             .addExecPaths("foo", VectorArg.of((ImmutableList<Artifact>) null))
             .addExecPaths("foo", VectorArg.of(ImmutableList.of()))
             .addPlaceholderTreeArtifactExecPath("foo", null)
-            .addCustomArgv((CustomArgv) null)
             .addCustomMultiArgv((CustomMultiArgv) null)
             .build();
     assertThat(cl.arguments()).isEmpty();