diff --git a/crypto/secp256k1/libsecp256k1/src/secp256k1.c b/crypto/secp256k1/libsecp256k1/src/secp256k1.c
index a248519dfd..f10110e4c7 100644
--- a/crypto/secp256k1/libsecp256k1/src/secp256k1.c
+++ b/crypto/secp256k1/libsecp256k1/src/secp256k1.c
@@ -140,7 +140,12 @@ secp256k1_context* secp256k1_context_preallocated_create(void* prealloc, unsigne
 
 secp256k1_context* secp256k1_context_create(unsigned int flags) {
     size_t const prealloc_size = secp256k1_context_preallocated_size(flags);
-    secp256k1_context* ctx = (secp256k1_context*)checked_malloc(&default_error_callback, prealloc_size);
+    secp256k1_context* ctx;
+
+    if (prealloc_size == 0) {
+        return NULL;
+    }
+    ctx = (secp256k1_context*)checked_malloc(&default_error_callback, prealloc_size);
     if (EXPECT(secp256k1_context_preallocated_create(ctx, flags) == NULL, 0)) {
         free(ctx);
         return NULL;