diff --git a/configure.py b/configure.py
index cd172fe57..d0784e882 100644
--- a/configure.py
+++ b/configure.py
@@ -678,7 +678,7 @@ config.libs = [
             Object(NonMatching, "JSystem/JAudio/JASDrumSet.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASBasicWaveBank.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASSimpleWaveBank.cpp"),
-            Object(NonMatching, "JSystem/JAudio/JASInstEffect.cpp"),
+            Object(Matching,    "JSystem/JAudio/JASInstEffect.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASInstSense.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASInstRand.cpp"),
             Object(NonMatching, "JSystem/JAudio/JASWSParser.cpp"),
diff --git a/include/JSystem/JAudio/JASInstEffect.h b/include/JSystem/JAudio/JASInstEffect.h
new file mode 100644
index 000000000..78f4a56c4
--- /dev/null
+++ b/include/JSystem/JAudio/JASInstEffect.h
@@ -0,0 +1,17 @@
+#ifndef JASINSTEFFECT_H
+#define JASINSTEFFECT_H
+
+#include "dolphin/types.h"
+
+namespace JASystem {
+    class TInstEffect {
+    public:
+        TInstEffect() { mTarget = 0; }
+        virtual f32 getY(int, int) const = 0;
+        void setTarget(int);
+
+        /* 0x04 */ u8 mTarget;
+    };
+}
+
+#endif /* JASINSTEFFECT_H */
diff --git a/src/JSystem/JAudio/JASInstEffect.cpp b/src/JSystem/JAudio/JASInstEffect.cpp
index a91f7cd29..aa3986ff4 100644
--- a/src/JSystem/JAudio/JASInstEffect.cpp
+++ b/src/JSystem/JAudio/JASInstEffect.cpp
@@ -3,11 +3,12 @@
 // Translation Unit: JASInstEffect.cpp
 //
 
-#include "JASInstEffect.h"
-#include "dolphin/types.h"
+#include "JSystem/JAudio/JASInstEffect.h"
+#include "JSystem/JUtility/JUTAssert.h"
 
 /* 8028684C-802868F0       .text setTarget__Q28JASystem11TInstEffectFi */
-void JASystem::TInstEffect::setTarget(int) {
-    /* Nonmatching */
+void JASystem::TInstEffect::setTarget(int target) {
+    JUT_ASSERT(16, target >= 0);
+    JUT_ASSERT(17, target < 256);
+    mTarget = target;
 }
-