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-rw-r--r--src/libutil/config.cc7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/libutil/config.cc b/src/libutil/config.cc
index 2f9f988607ea..893cdccce344 100644
--- a/src/libutil/config.cc
+++ b/src/libutil/config.cc
@@ -90,7 +90,12 @@ template<> std::string Setting<int>::to_string()
 
 template<> void Setting<bool>::set(const std::string & str)
 {
-    value = str == "true" || str == "1";
+    if (str == "true" || str == "yes" || str == "1")
+        value = true;
+    else if (str == "false" || str == "no" || str == "0")
+        value = false;
+    else
+        throw UsageError("Boolean setting '%s' has invalid value '%s'", name, str);
 }
 
 template<> std::string Setting<bool>::to_string()