diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index 4087e61670230..1db33e5b18225 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -1710,7 +1710,7 @@ PHP_FUNCTION(pg_fetch_result)
 			Z_PARAM_OBJECT_OF_CLASS(result, pgsql_result_ce)
 			Z_PARAM_STR_OR_LONG(field_name, field_offset)
 		ZEND_PARSE_PARAMETERS_END();
-	} else {
+	} else if (ZEND_NUM_ARGS() == 3) {
 		ZEND_PARSE_PARAMETERS_START(3, 3)
 			Z_PARAM_OBJECT_OF_CLASS(result, pgsql_result_ce)
 			if (zend_string_equals_literal(EG(current_execute_data)->func->common.function_name, "pg_result")) {
@@ -1720,6 +1720,9 @@ PHP_FUNCTION(pg_fetch_result)
 			}
 			Z_PARAM_STR_OR_LONG(field_name, field_offset)
 		ZEND_PARSE_PARAMETERS_END();
+	} else {
+		zend_wrong_parameters_count_error(2, 3);
+		RETURN_THROWS();
 	}
 
 	pg_result = Z_PGSQL_RESULT_P(result);
diff --git a/ext/pgsql/tests/gh17158.phpt b/ext/pgsql/tests/gh17158.phpt
new file mode 100644
index 0000000000000..ade47ededed12
--- /dev/null
+++ b/ext/pgsql/tests/gh17158.phpt
@@ -0,0 +1,16 @@
+--TEST--
+GH-17158 (pg_fetch_result Shows Incorrect ArgumentCountError Message when Called With 1 Argument)
+--EXTENSIONS--
+pgsql
+--FILE--
+<?php
+
+try {
+    pg_fetch_result(null);
+} catch (ArgumentCountError $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECT--
+pg_fetch_result() expects at least 2 arguments, 1 given