diff --git a/lib/src/optimizers/mixed-integer-optimization/callbacks/watchers/PlotManager.cpp b/lib/src/optimizers/mixed-integer-optimization/callbacks/watchers/PlotManager.cpp
index e6da2949..b878565a 100644
--- a/lib/src/optimizers/mixed-integer-optimization/callbacks/watchers/PlotManager.cpp
+++ b/lib/src/optimizers/mixed-integer-optimization/callbacks/watchers/PlotManager.cpp
@@ -82,4 +82,6 @@ idol::Plots::Manager::Manager() {
     throw Exception("idol was not compiled with ROOT.");
 }
 
+idol::Plots::Manager::~Manager() {}
+
 #endif