diff --git a/edo/src/edoRepairerDispatcher.h b/edo/src/edoRepairerDispatcher.h
index 117e8dfb..1bf9cb39 100644
--- a/edo/src/edoRepairerDispatcher.h
+++ b/edo/src/edoRepairerDispatcher.h
@@ -131,6 +131,7 @@ public:
     {
 //        std::cout << "in dispatcher, sol = " << sol << std::endl;
 
+        // iterate over { indexe, repairer }
         // ipair is an iterator that points on a pair of <indexes,repairer>
         for( typename edoRepairerDispatcher<EOT>::iterator ipair = this->begin(); ipair != this->end(); ++ipair ) {
 
@@ -140,6 +141,8 @@ public:
             EOT partsol;
 
 //            std::cout << "\tusing indexes = ";
+//
+            // iterate over indexes
             // j is an iterator that points on an uint
             for( std::vector< unsigned int >::iterator j = ipair->first.begin(); j != ipair->first.end(); ++j ) {
 
@@ -151,6 +154,9 @@ public:
 //            std::cout << std::endl;
 //            std::cout << "\tpartial sol = " << partsol << std::endl;
 
+            if( partsol.size() == 0 ) {
+                continue;
+            }
             assert( partsol.size() > 0 );
 
             // apply the repairer on the partial copy