diff --git a/dune/gfe/adolcnamespaceinjections.hh b/dune/gfe/adolcnamespaceinjections.hh
index 100224fbd45ba29682b1d7ed4a61cbff66cb5756..56c9a047dd48b2e9a1b6c213e56c222cf219ef41 100644
--- a/dune/gfe/adolcnamespaceinjections.hh
+++ b/dune/gfe/adolcnamespaceinjections.hh
@@ -94,6 +94,9 @@ namespace std
         return numeric_limits<double>::max();
       }
 
+      static adouble epsilon() {
+        return numeric_limits<double>::epsilon();
+      }
       static adouble quiet_NaN() {
         return numeric_limits<double>::quiet_NaN();
       }