diff --git a/bcc.cpp b/bcc.cpp
index ff1599b..f883106 100644
--- a/bcc.cpp
+++ b/bcc.cpp
@@ -2672,7 +2672,7 @@
                                     PROT_READ | PROT_EXEC | PROT_WRITE,
                                     MAP_PRIVATE, mCacheFd, 0);
 
-      if (mCodeDataAddr == MAP_FAILED) {
+      if (mCacheMapAddr == MAP_FAILED) {
         LOGE("unable to mmap .oBBC cache: %s\n", strerror(errno));
         flock(mCacheFd, LOCK_UN);
         goto giveup;