diff --git a/org.eclipse.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java b/org.eclipse.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
index 45c2f8a..3291bba 100644
--- a/org.eclipse.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
+++ b/org.eclipse.jgit/src/org/spearce/jgit/lib/RepositoryConfig.java
@@ -236,9 +236,9 @@ protected boolean getBoolean(final String section, String subsection,
      return defaultValue;
 
    n = n.toLowerCase();
-   if (MAGIC_EMPTY_VALUE.equals(n) || "yes".equals(n) || "true".equals(n) || "1".equals(n)) {
+   if (MAGIC_EMPTY_VALUE.equals(n) || "yes".equalsIgnoreCase(n) || "true".equalsIgnoreCase(n) || "1".equals(n)) {
      return true;
+   } else if ("no".equalsIgnoreCase(n) || "false".equalsIgnoreCase(n) || "0".equalsIgnoreCase(n)) {
      return false;
    } else {
      throw new IllegalArgumentException("Invalid boolean value: "