diff --git a/src/backend/jit/llvm/llvmjit.c b/src/backend/jit/llvm/llvmjit.c
index 49e76153f9a..8d009dd5cf7 100644
--- a/src/backend/jit/llvm/llvmjit.c
+++ b/src/backend/jit/llvm/llvmjit.c
@@ -1058,7 +1058,7 @@ llvm_split_symbol_name(const char *name, char **modname, char **funcname)
 		 * Symbol names cannot contain a ., therefore we can split based on
 		 * first and last occurrence of one.
 		 */
-		*funcname = rindex(name, '.');
+		*funcname = strrchr(name, '.');
 		(*funcname)++;			/* jump over . */
 
 		*modname = pnstrdup(name + strlen("pgextern."),