diff --git a/tools/projmgr/src/ProjMgrYamlParser.cpp b/tools/projmgr/src/ProjMgrYamlParser.cpp
index c933785ab..df436fb13 100644
--- a/tools/projmgr/src/ProjMgrYamlParser.cpp
+++ b/tools/projmgr/src/ProjMgrYamlParser.cpp
@@ -486,10 +486,15 @@ void ProjMgrYamlParser::ParseVectorOfStringPairs(const YAML::Node& parent, const
         if (item.IsMap()) {
           const auto& elements = item.as<map<string, string>>();
           for (auto element : elements) {
-            if (YAML::IsNullString(element.second)) {
-              element.second = "";
+            // skip parsing variable named "copied-from"
+            // This is a special case used by the CMSIS csolution extension
+            // and may involve redefinitions
+            if (element.first != "copied-from") {
+              if (YAML::IsNullString(element.second)) {
+                element.second = "";
+              }
+              value.push_back(element);
             }
-            value.push_back(element);
           }
         } else {
           value.push_back(make_pair(item.as<string>(), ""));
diff --git a/tools/projmgr/test/data/TestLayers/variables-redefinition.csolution.yml b/tools/projmgr/test/data/TestLayers/variables-redefinition.csolution.yml
index c4d00a356..483233758 100644
--- a/tools/projmgr/test/data/TestLayers/variables-redefinition.csolution.yml
+++ b/tools/projmgr/test/data/TestLayers/variables-redefinition.csolution.yml
@@ -7,12 +7,14 @@ solution:
       compiler: AC6
       variables:
         - VariableName: FirstValue
+        - copied-from: /buildtype/test.yml
 
   target-types:
     - type: TargetType
       device: RteTest_ARMCM0
       variables:
         - VariableName: SecondValue
+        - copied-from: /targettype/test.yml
 
   projects:
     - project: variables-redefinition.cproject.yml