diff --git a/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.cpp b/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.cpp
index 547e613d..8eec7460 100644
--- a/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.cpp
+++ b/lang/cpp/src/gpgaddexistingsubkeyeditinteractor.cpp
@@ -136,7 +136,7 @@ unsigned int GpgAddExistingSubkeyEditInteractor::Private::nextState(unsigned int
                 strcmp(args, "keygen.flags") == 0) {
             return FLAGS;
         } else if (status == GPGME_STATUS_GET_LINE &&
-                   strcmp(args, "keygen.keygrip")) {
+                   strcmp(args, "keygen.keygrip") == 0) {
             err = NO_KEY_ERROR;
             return ERROR;
         }
@@ -157,7 +157,7 @@ unsigned int GpgAddExistingSubkeyEditInteractor::Private::nextState(unsigned int
                 strcmp(args, "keyedit.prompt") == 0) {
             return QUIT;
         } else if (status == GPGME_STATUS_GET_LINE &&
-                   strcmp(args, "keygen.valid")) {
+                   strcmp(args, "keygen.valid") == 0) {
             err = INV_TIME_ERROR;
             return ERROR;
         }