diff --git a/src/sfizz/effects/Eq.cpp b/src/sfizz/effects/Eq.cpp
index 8c1188c5..90c5e032 100644
--- a/src/sfizz/effects/Eq.cpp
+++ b/src/sfizz/effects/Eq.cpp
@@ -83,7 +83,7 @@ namespace fx {
                         desc.type = *ftype;
                     else {
                         desc.type = EqType::kEqNone;
-                        DBG("Unknown EQ type: " << std::string(opcode.value));
+                        DBG("Unknown EQ type: " << std::string(opc.value));
                     }
                     break;
                 }
diff --git a/src/sfizz/effects/Filter.cpp b/src/sfizz/effects/Filter.cpp
index 42ee5c4f..a3783c9b 100644
--- a/src/sfizz/effects/Filter.cpp
+++ b/src/sfizz/effects/Filter.cpp
@@ -82,7 +82,7 @@ namespace fx {
                         desc.type = *ftype;
                     else {
                         desc.type = FilterType::kFilterNone;
-                        DBG("Unknown filter type: " << std::string(opcode.value));
+                        DBG("Unknown filter type: " << std::string(opc.value));
                     }
                     break;
                 }