diff --git a/memory/build/extraMallocFuncs.c b/memory/build/extraMallocFuncs.c
index b024b11ab5c..fd7b60a9172 100644
--- a/memory/build/extraMallocFuncs.c
+++ b/memory/build/extraMallocFuncs.c
@@ -107,4 +107,10 @@ _je_malloc_message(void *cbopaque, const char *s)
 void (*je_malloc_message)(void *, const char *s) = _je_malloc_message;
 #endif
 
+#include <mozilla/Assertions.h>
+
+void moz_abort() {
+  MOZ_CRASH();
+}
+
 #endif /* MOZ_JEMALLOC */
diff --git a/memory/jemalloc/Makefile.in b/memory/jemalloc/Makefile.in
index 923d01570f5..8393f6d7d41 100644
--- a/memory/jemalloc/Makefile.in
+++ b/memory/jemalloc/Makefile.in
@@ -45,3 +45,5 @@ endif
 ifdef GNU_CC
 CFLAGS += -std=gnu99
 endif
+
+DEFINES += -Dabort=moz_abort