diff --git a/src/gui/presets.cpp b/src/gui/presets.cpp
index 803495d2b..a9b13113e 100644
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@@ -3176,7 +3176,7 @@ FurnaceGUISysDef::FurnaceGUISysDef(const char* n, const char* def, DivEngine* e)
     float panFR=conf.getFloat(nextStr.c_str(),0.0f);
     conf.remove(nextStr.c_str());
     nextStr=fmt::sprintf("flags%d",i);
-    String flags=conf.getString(nextStr.c_str(),"");
+    String flags=taDecodeBase64(conf.getString(nextStr.c_str(),"").c_str());
     conf.remove(nextStr.c_str());
 
     orig.push_back(FurnaceGUISysDefChip(e->systemFromFileFur(id),vol,pan,flags.c_str(),panFR));
diff --git a/src/gui/userPresets.cpp b/src/gui/userPresets.cpp
index d0b5369c7..1bbab1909 100644
--- a/src/gui/userPresets.cpp
+++ b/src/gui/userPresets.cpp
@@ -438,9 +438,9 @@ void FurnaceGUI::drawUserPresets() {
 
               if (ImGui::TreeNode("Configure")) {
                 DivConfig sysFlags;
-                sysFlags.loadFromBase64(chip.flags.c_str());
+                sysFlags.loadFromMemory(chip.flags.c_str());
                 if (drawSysConf(-1,i,chip.sys,sysFlags,false)) {
-                  chip.flags=sysFlags.toBase64();
+                  chip.flags=sysFlags.toString();
                   mustBake=true;
                 }
                 ImGui::TreePop();