diff --git a/libbpf_android/Loader.cpp b/libbpf_android/Loader.cpp
index ad20176..d68f407 100644
--- a/libbpf_android/Loader.cpp
+++ b/libbpf_android/Loader.cpp
@@ -30,9 +30,9 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-// This is BpfLoader v0.27
+// This is BpfLoader v0.28
 #define BPFLOADER_VERSION_MAJOR 0u
-#define BPFLOADER_VERSION_MINOR 27u
+#define BPFLOADER_VERSION_MINOR 28u
 #define BPFLOADER_VERSION ((BPFLOADER_VERSION_MAJOR << 16) | BPFLOADER_VERSION_MINOR)
 
 #include "bpf/BpfUtils.h"
@@ -737,6 +737,8 @@
     }
 
     for (int i = 0; i < (int)mapNames.size(); i++) {
+        if (md[i].zero != 0) abort();
+
         if (BPFLOADER_VERSION < md[i].bpfloader_min_ver) {
             ALOGI("skipping map %s which requires bpfloader min ver 0x%05x", mapNames[i].c_str(),
                   md[i].bpfloader_min_ver);