diff --git a/libs/airwindows/src/Apicolypse.cpp b/libs/airwindows/src/Apicolypse.cpp
index 0083e95b4a0..942568c426f 100644
--- a/libs/airwindows/src/Apicolypse.cpp
+++ b/libs/airwindows/src/Apicolypse.cpp
@@ -153,7 +153,7 @@ bool Apicolypse::parseParameterValueFromString(VstInt32 index, const char* txt,
 
    if (index == kParamD)
    {
-      string2dB(txt, v);
+      f = string2dB(txt, v);
    }
    else
    {