diff --git a/src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cpp b/src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cpp
index 51a7281fe32df4..d505d7d1a76a68 100644
--- a/src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cpp
+++ b/src/coreclr/tools/superpmi/superpmi-shared/methodcontext.cpp
@@ -6112,6 +6112,8 @@ void MethodContext::dmpGetCookieForPInvokeCalliSig(const GetCookieForPInvokeCall
 }
 LPVOID MethodContext::repGetCookieForPInvokeCalliSig(CORINFO_SIG_INFO* szMetaSig, void** ppIndirection)
 {
+    AssertMapExistsNoMessage(GetCookieForInterpreterCalliSig);
+
     GetCookieForPInvokeCalliSigValue key;
     ZeroMemory(&key, sizeof(key)); // Zero key including any struct padding
     key.cbSig      = (DWORD)szMetaSig->cbSig;