diff --git a/Documentation/Examples/CMakeLists.txt b/Documentation/Examples/CMakeLists.txt
index ab9efaf5f09f598f368a7398db7fadd8c5474d93..d5e2413e185089d09ae60a2c0084f47ee48c606c 100644
--- a/Documentation/Examples/CMakeLists.txt
+++ b/Documentation/Examples/CMakeLists.txt
@@ -84,7 +84,7 @@ if (Pythia8_FOUND)
     CORSIKAprocesssequence
     )
 
-  CORSIKA_ADD_EXAMPLE (vertical_EAS RUN_OPTIONS 4 2 10000.)
+  CORSIKA_ADD_EXAMPLE (vertical_EAS RUN_OPTIONS "4 2 10000.")
   target_link_libraries (vertical_EAS
     CORSIKAsetup
     CORSIKAunits
@@ -136,7 +136,7 @@ target_link_libraries (staticsequence_example
   CORSIKAlogging)
 
 
-CORSIKA_ADD_EXAMPLE (em_shower RUN_OPTIONS 100.)
+CORSIKA_ADD_EXAMPLE (em_shower RUN_OPTIONS "100.")
 target_link_libraries (em_shower
   SuperStupidStack
   CORSIKAunits