diff --git a/src/storage/prism/Program.cpp b/src/storage/prism/Program.cpp
index fee721878..7947b4c78 100644
--- a/src/storage/prism/Program.cpp
+++ b/src/storage/prism/Program.cpp
@@ -171,6 +171,21 @@ namespace storm {
             }
             return result;
         }
+
+        std::string Program::getUndefinedConstantsAsString() const {
+            std::stringstream stream;
+            bool printComma = false;
+            for (auto const& constant : getUndefinedConstants()) {
+                if (printComma) {
+                    stream << ", ";
+                } else {
+                    printComma = true;
+                }
+                stream << constant.get().getName() << " (" << constant.get().getType() << ")";
+            }
+            stream << ".";
+            return stream.str();
+        }
         
         bool Program::hasConstant(std::string const& constantName) const {
             return this->constantToIndexMap.find(constantName) != this->constantToIndexMap.end();
diff --git a/src/storage/prism/Program.h b/src/storage/prism/Program.h
index b4e6d45b5..45ac16b62 100644
--- a/src/storage/prism/Program.h
+++ b/src/storage/prism/Program.h
@@ -89,7 +89,14 @@ namespace storm {
              * @return The undefined constants in the program.
              */
             std::vector<std::reference_wrapper<storm::prism::Constant const>> getUndefinedConstants() const;
-            
+
+            /*!
+             * Retrieves the undefined constants in the program as a comma-separated string.
+             *
+             * @return A string with the undefined constants in the program, separated by a comma
+             */
+            std::string getUndefinedConstantsAsString() const;
+
             /*!
              * Retrieves whether the given constant exists in the program.
              *