diff --git a/platform/core-api/src/com/intellij/openapi/command/WriteCommandAction.java b/platform/core-api/src/com/intellij/openapi/command/WriteCommandAction.java
index 5f5a58fa8dc1..a32a68723977 100644
--- a/platform/core-api/src/com/intellij/openapi/command/WriteCommandAction.java
+++ b/platform/core-api/src/com/intellij/openapi/command/WriteCommandAction.java
@@ -366,12 +366,4 @@ public abstract class WriteCommandAction<T> extends BaseActionRunnable<T> {
   public static <T, E extends Throwable> T runWriteCommandAction(Project project, @NotNull final ThrowableComputable<T, E> computable) throws E {
     return writeCommandAction(project).compute(computable);
   }
-
-  //<editor-fold desc="Deprecated stuff.">
-  /** @deprecated use {@link FileModificationService#preparePsiElementsForWrite(Collection)} (to be removed in IDEA 2018) */
-  @SuppressWarnings("unused")
-  public static boolean ensureFilesWritable(@NotNull Project project, @NotNull Collection<PsiFile> psiFiles) {
-    return FileModificationService.getInstance().preparePsiElementsForWrite(psiFiles);
-  }
-  //</editor-fold>
 }
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