diff --git a/iommu_registers.adoc b/iommu_registers.adoc
index 4675f54f..9803a6cb 100644
--- a/iommu_registers.adoc
+++ b/iommu_registers.adoc
@@ -68,8 +68,10 @@ the register returns 0 and writes to that offset are ignored.
                                        CSR >>             | if `capabilities.ATS==0`
 |84    |`ipsr`          |4   |<<IPSR, Interrupt pending
                                          status register>>| No
-|88    |`iocntovf`      |4   |<<OVF, HPM counter overflows>> | if `capabilities.HPM==0`
-|92    |`iocntinh`      |4   |<<INH, HPM counter inhibits>> | if `capabilities.HPM==0`
+|88    |`iocountovf`    |4   |<<OVF, HPM counter
+                                              overflows>> | if `capabilities.HPM==0`
+|92    |`iocountinh`    |4   |<<INH, HPM counter
+                                               inhibits>> | if `capabilities.HPM==0`
 |96    |`iohpmcycles`   |8   |<<CYC, HPM cycles counter>> | if `capabilities.HPM==0`
 |104   |`iohpmctr1-31`  |248 |<<CTR, HPM event counters>> | if `capabilities.HPM==0`
 |352   |`iohpmevt1-31`  |248 |<<EVT, HPM event selector>> | if `capabilities.HPM==0`