diff --git a/sdk/bpf/c/inc/sol/assert.h b/sdk/bpf/c/inc/sol/assert.h
index e679e344c2..2ed662a9b2 100644
--- a/sdk/bpf/c/inc/sol/assert.h
+++ b/sdk/bpf/c/inc/sol/assert.h
@@ -32,6 +32,7 @@ if (!(expr)) {          \
  * Stub functions when building tests
  */
 #include <stdio.h>
+#include <stdlib.h>
 
 void sol_panic_(const char *file, uint64_t len, uint64_t line, uint64_t column) {
   printf("Panic in %s at %d:%d\n", file, line, column);