diff --git a/Ghidra/Processors/SuperH/data/languages/superh.cspec b/Ghidra/Processors/SuperH/data/languages/superh.cspec
index 2a06d7a5a0..f73a1a27e7 100644
--- a/Ghidra/Processors/SuperH/data/languages/superh.cspec
+++ b/Ghidra/Processors/SuperH/data/languages/superh.cspec
@@ -62,6 +62,7 @@
                 <register name="r13"/>
                 <register name="r14"/>
                 <register name="r15"/>
+                <register name="gbr"/>
             </unaffected>
             <killedbycall>
                 <register name="r2"/>
diff --git a/Ghidra/Processors/SuperH/data/languages/superh2a.cspec b/Ghidra/Processors/SuperH/data/languages/superh2a.cspec
index 0114e1f5f8..aad2b1073e 100644
--- a/Ghidra/Processors/SuperH/data/languages/superh2a.cspec
+++ b/Ghidra/Processors/SuperH/data/languages/superh2a.cspec
@@ -78,6 +78,7 @@
                 <register name="r13"/>
                 <register name="r14"/>
                 <register name="r15"/>
+                <register name="gbr"/>
             </unaffected>
             <killedbycall>
                 <register name="r2"/>