diff --git a/Zend/tests/type_declarations/internal_function_strict_mode.phpt b/Zend/tests/type_declarations/internal_function_strict_mode.phpt
index 455164f3276..5b2ad90abfe 100644
--- a/Zend/tests/type_declarations/internal_function_strict_mode.phpt
+++ b/Zend/tests/type_declarations/internal_function_strict_mode.phpt
@@ -32,4 +32,4 @@ try {
 *** Trying Array Map With Invalid Callback
 *** Caught array_map(): Argument #1 ($callback) must be a valid callback or null, first array member is not a valid class name or object
 *** Trying Strlen With Float
-*** Caught strlen(): Argument #1 ($str) must be of type string, float given
+*** Caught strlen(): Argument #1 ($string) must be of type string, float given
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index 4845a92b95a..e6ace6ce3a9 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -8451,7 +8451,7 @@ ZEND_VM_COLD_CONST_HANDLER(121, ZEND_STRLEN, CONST|TMPVAR|CV, ANY)
 				zval_ptr_dtor(&tmp);
 			}
 			if (!EG(exception)) {
-				zend_type_error("strlen(): Argument #1 ($str) must be of type string, %s given", zend_zval_type_name(value));
+				zend_type_error("strlen(): Argument #1 ($string) must be of type string, %s given", zend_zval_type_name(value));
 			}
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 		} while (0);
diff --git a/Zend/zend_vm_execute.h b/Zend/zend_vm_execute.h
index a5a5eabf2b0..61921b608aa 100644
--- a/Zend/zend_vm_execute.h
+++ b/Zend/zend_vm_execute.h
@@ -5523,7 +5523,7 @@ static ZEND_VM_COLD ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_STRLEN_SPEC_CONST
 				zval_ptr_dtor(&tmp);
 			}
 			if (!EG(exception)) {
-				zend_type_error("strlen(): Argument #1 ($str) must be of type string, %s given", zend_zval_type_name(value));
+				zend_type_error("strlen(): Argument #1 ($string) must be of type string, %s given", zend_zval_type_name(value));
 			}
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 		} while (0);
@@ -14679,7 +14679,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_STRLEN_SPEC_TMPVAR_HANDLER(ZEN
 				zval_ptr_dtor(&tmp);
 			}
 			if (!EG(exception)) {
-				zend_type_error("strlen(): Argument #1 ($str) must be of type string, %s given", zend_zval_type_name(value));
+				zend_type_error("strlen(): Argument #1 ($string) must be of type string, %s given", zend_zval_type_name(value));
 			}
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 		} while (0);
@@ -39285,7 +39285,7 @@ static ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL ZEND_STRLEN_SPEC_CV_HANDLER(ZEND_OP
 				zval_ptr_dtor(&tmp);
 			}
 			if (!EG(exception)) {
-				zend_type_error("strlen(): Argument #1 ($str) must be of type string, %s given", zend_zval_type_name(value));
+				zend_type_error("strlen(): Argument #1 ($string) must be of type string, %s given", zend_zval_type_name(value));
 			}
 			ZVAL_UNDEF(EX_VAR(opline->result.var));
 		} while (0);