diff --git a/src/libs/languageserverprotocol/progresssupport.h b/src/libs/languageserverprotocol/progresssupport.h
index 0c2be91cda4..65cead4287b 100644
--- a/src/libs/languageserverprotocol/progresssupport.h
+++ b/src/libs/languageserverprotocol/progresssupport.h
@@ -76,8 +76,12 @@ public:
      * The value should be steadily rising. Clients are free to ignore values
      * that are not following this rule.
      */
-    Utils::optional<int> percentage() const { return optionalValue<int>(percentageKey); }
-    void setPercentage(int percentage) { insert(percentageKey, percentage); }
+
+    // Allthough percentage is defined as an uint by the protocol some server
+    // return a double here. Be less strict and also use a double.
+    // CAUTION: the range is still 0 - 100 and not 0 - 1
+    Utils::optional<double> percentage() const { return optionalValue<double>(percentageKey); }
+    void setPercentage(double percentage) { insert(percentageKey, percentage); }
     void clearPercentage() { remove(percentageKey); }
 };
 
diff --git a/src/plugins/languageclient/progressmanager.cpp b/src/plugins/languageclient/progressmanager.cpp
index a8543378334..d25da8a3e0f 100644
--- a/src/plugins/languageclient/progressmanager.cpp
+++ b/src/plugins/languageclient/progressmanager.cpp
@@ -107,9 +107,8 @@ void ProgressManager::reportProgress(const ProgressToken &token,
         }
     }
     if (progress.futureInterface) {
-        const Utils::optional<int> &progressValue = report.percentage();
-        if (progressValue.has_value())
-            progress.futureInterface->setProgressValue(*progressValue);
+        if (const Utils::optional<double> &percentage = report.percentage(); percentage.has_value())
+            progress.futureInterface->setProgressValue(*percentage);
     }
 }