diff --git a/src/main/java/com/jcabi/log/FileDecor.java b/src/main/java/com/jcabi/log/FileDecor.java
index 300f80f3..25f90149 100644
--- a/src/main/java/com/jcabi/log/FileDecor.java
+++ b/src/main/java/com/jcabi/log/FileDecor.java
@@ -75,6 +75,9 @@ public void formatTo(final Formatter formatter, final int flags,
             if (rel.startsWith("..")) {
                 rel = self.toString();
             }
+            if (rel.isEmpty()) {
+                rel = "./";
+            }
             writer.write(rel);
         }
         formatter.format("%s", writer);
diff --git a/src/test/java/com/jcabi/log/FileDecorTest.java b/src/test/java/com/jcabi/log/FileDecorTest.java
index 8ef22640..56833948 100644
--- a/src/test/java/com/jcabi/log/FileDecorTest.java
+++ b/src/test/java/com/jcabi/log/FileDecorTest.java
@@ -103,6 +103,8 @@ private static Collection<Object[]> params() {
             new Object[][] {
                 {null, "NULL", 0, 0, 0},
                 {"foo.txt", "foo.txt", 0, 0, 0},
+                {".", "./", 0, 0, 0},
+                {"/tmp", "/tmp", 0, 0, 0},
                 {new File("/tmp/x.txt"), "/tmp/x.txt", 0, 0, 0},
                 {Paths.get("/a/b/c.txt"), "/a/b/c.txt", 0, 0, 0},
             }