diff --git a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
index a34eb18a5e8..91f606027b0 100644
--- a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
+++ b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
@@ -115,7 +115,6 @@ static void initDA(XSQLDA *sqlda)
         default:
             // not supported - do not bind.
             sqlda->sqlvar[i].sqldata = 0;
-            qCWarning(lcIbase, "initDA: unknown sqltype: %d", sqlda->sqlvar[i].sqltype & ~1);
             break;
         }
         if (sqlda->sqlvar[i].sqltype & 1) {
@@ -206,10 +205,8 @@ static QMetaType::Type qIBaseTypeName2(int iType, bool hasScale)
     case SQL_BOOLEAN:
         return QMetaType::Bool;
     default:
-        break;
+        return QMetaType::UnknownType;
     }
-    qCWarning(lcIbase, "qIBaseTypeName: unknown datatype: %d", iType);
-    return QMetaType::UnknownType;
 }
 
 static ISC_TIMESTAMP toTimeStamp(const QDateTime &dt)
@@ -1291,8 +1288,6 @@ bool QIBaseResult::gotoNext(QSqlCachedResult::ValueCache& row, int rowIdx)
 #endif
         default:
             // unknown type - don't even try to fetch
-            qCWarning(lcIbase, "gotoNext: unknown sqltype: %d",
-                      d->sqlda->sqlvar[i].sqltype & ~1);
             row[idx] = QVariant();
             break;
         }