diff --git a/Base.lproj/MainMenu.xib b/Base.lproj/MainMenu.xib
index 8f6a42774..6883120aa 100644
--- a/Base.lproj/MainMenu.xib
+++ b/Base.lproj/MainMenu.xib
@@ -876,11 +876,13 @@
                             </connections>
                         </button>
                     </toolbarItem>
-                    <toolbarItem implicitItemIdentifier="80D8CDBD-A6E9-47A6-B9C0-213C450E45FA" label="Spectrum" paletteLabel="Spectrum" tag="-1" sizingBehavior="auto" id="NtB-XF-g07" customClass="SpectrumItem">
+                    <toolbarItem implicitItemIdentifier="80D8CDBD-A6E9-47A6-B9C0-213C450E45FA" label="Spectrum" paletteLabel="Spectrum" tag="-1" id="NtB-XF-g07" customClass="SpectrumItem">
                         <nil key="toolTip"/>
+                        <size key="minSize" width="64" height="26"/>
+                        <size key="maxSize" width="64" height="26"/>
                         <customView key="view" id="lVy-2P-05b" customClass="SpectrumView">
                             <rect key="frame" x="0.0" y="14" width="64" height="26"/>
-                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                            <autoresizingMask key="autoresizingMask"/>
                         </customView>
                     </toolbarItem>
                 </allowedToolbarItems>
@@ -1130,11 +1132,13 @@
                             </connections>
                         </button>
                     </toolbarItem>
-                    <toolbarItem implicitItemIdentifier="09140C29-FF34-4BF2-92C8-54C7D9AA4A27" label="Spectrum" paletteLabel="Spectrum" tag="-1" sizingBehavior="auto" id="sf3-l1-fJw" customClass="SpectrumItem">
+                    <toolbarItem implicitItemIdentifier="09140C29-FF34-4BF2-92C8-54C7D9AA4A27" label="Spectrum" paletteLabel="Spectrum" tag="-1" id="sf3-l1-fJw" customClass="SpectrumItem">
                         <nil key="toolTip"/>
+                        <size key="minSize" width="64" height="26"/>
+                        <size key="maxSize" width="64" height="26"/>
                         <customView key="view" id="gyu-hn-EUs" customClass="SpectrumView">
                             <rect key="frame" x="0.0" y="14" width="64" height="26"/>
-                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                            <autoresizingMask key="autoresizingMask"/>
                         </customView>
                     </toolbarItem>
                 </allowedToolbarItems>