diff --git a/crypto/fipsmodule/CMakeLists.txt b/crypto/fipsmodule/CMakeLists.txt
index 9868dd8..e6c8cc6 100644
--- a/crypto/fipsmodule/CMakeLists.txt
+++ b/crypto/fipsmodule/CMakeLists.txt
@@ -162,12 +162,12 @@
   set_target_properties(bcm_hashunset PROPERTIES POSITION_INDEPENDENT_CODE ON)
   set_target_properties(bcm_hashunset PROPERTIES LINKER_LANGUAGE C)
 
-  go_executable(inject-hash
-	        boringssl.googlesource.com/boringssl/util/fipstools/inject-hash)
+  go_executable(inject_hash
+	        boringssl.googlesource.com/boringssl/util/fipstools/inject_hash)
   add_custom_command(
     OUTPUT bcm.o
-    COMMAND ./inject-hash -o bcm.o -in-archive $<TARGET_FILE:bcm_hashunset>
-    DEPENDS bcm_hashunset inject-hash
+    COMMAND ./inject_hash -o bcm.o -in-archive $<TARGET_FILE:bcm_hashunset>
+    DEPENDS bcm_hashunset inject_hash
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
   )
 
diff --git a/crypto/fipsmodule/FIPS.md b/crypto/fipsmodule/FIPS.md
index a691d18..426b38e 100644
--- a/crypto/fipsmodule/FIPS.md
+++ b/crypto/fipsmodule/FIPS.md
@@ -103,7 +103,7 @@
 
 In order to actually implement the integrity test, a constructor function within the module calculates an HMAC from `module_start` to `module_end` using a fixed, all-zero key. It compares the result with the known-good value added (by the script) to the unhashed portion of the text segment. If they don't match, it calls `exit` in an infinite loop.
 
-Initially the known-good value will be incorrect. Another script (`inject-hash.go`) calculates the correct value from the assembled object and injects it back into the object.
+Initially the known-good value will be incorrect. Another script (`inject_hash.go`) calculates the correct value from the assembled object and injects it back into the object.
 
 ![build process](/crypto/fipsmodule/intcheck2.png)
 
diff --git a/util/fipstools/inject-hash/inject-hash.go b/util/fipstools/inject_hash/inject_hash.go
similarity index 98%
rename from util/fipstools/inject-hash/inject-hash.go
rename to util/fipstools/inject_hash/inject_hash.go
index d079654..29307c0 100644
--- a/util/fipstools/inject-hash/inject-hash.go
+++ b/util/fipstools/inject_hash/inject_hash.go
@@ -12,7 +12,7 @@
 // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-// inject-hash parses an archive containing a file object file. It finds a FIPS
+// inject_hash parses an archive containing a file object file. It finds a FIPS
 // module inside that object, calculates its hash and replaces the default hash
 // value in the object with the calculated value.
 package main