diff --git a/src/interfaces/ecpg/ecpglib/misc.c b/src/interfaces/ecpg/ecpglib/misc.c
index 98e0597b03c..c29f933ef9c 100644
--- a/src/interfaces/ecpg/ecpglib/misc.c
+++ b/src/interfaces/ecpg/ecpglib/misc.c
@@ -530,7 +530,7 @@ ECPGset_var(int number, void *pointer, int lineno)
 		struct sqlca_t *sqlca = ECPGget_sqlca();
 
 		sqlca->sqlcode = ECPG_OUT_OF_MEMORY;
-		strncpy(sqlca->sqlstate, "YE001", sizeof("YE001"));
+		strncpy(sqlca->sqlstate, "YE001", sizeof(sqlca->sqlstate));
 		snprintf(sqlca->sqlerrm.sqlerrmc, sizeof(sqlca->sqlerrm.sqlerrmc), "out of memory on line %d", lineno);
 		sqlca->sqlerrm.sqlerrml = strlen(sqlca->sqlerrm.sqlerrmc);
 		/* free all memory we have allocated for the user */