diff --git a/libtcc.c b/libtcc.c
index dc78643c..601999ea 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -1094,6 +1094,8 @@ LIBTCCAPI void tcc_delete(TCCState *s1)
 # endif
 #endif
 
+    if(s1->sym_attrs) tcc_free(s1->sym_attrs);
+
     tcc_free(s1);
 }
 
diff --git a/tccelf.c b/tccelf.c
index 036dba3a..6bde7d5f 100644
--- a/tccelf.c
+++ b/tccelf.c
@@ -2444,6 +2444,7 @@ static int elf_output_file(TCCState *s1, const char *filename)
     tcc_free(sec_order);
     tcc_free(phdr);
     tcc_free(s1->sym_attrs);
+    s1->sym_attrs = NULL;
     return ret;
 }