diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6254efda..041553fd0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,8 +23,8 @@ STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_V
 STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_REV "${GIT2_HEADER}")
 SET(LIBGIT2_VERSION_STRING "${LIBGIT2_VERSION_MAJOR}.${LIBGIT2_VERSION_MINOR}.${LIBGIT2_VERSION_REV}")
 
-# Comment out the line below to use OpenSSL SHA1
-SET(SHA1_TYPE "ppc")
+# Uncomment out the line below to use PowerPC SHA1
+#SET(SHA1_TYPE "ppc")
 
 # Find required dependencies
 INCLUDE_DIRECTORIES(src include deps/http-parser)
@@ -34,7 +34,7 @@ FILE(GLOB SRC_HTTP deps/http-parser/*.c)
 # Specify sha1 implementation
 IF (SHA1_TYPE STREQUAL "ppc")
     ADD_DEFINITIONS(-DPPC_SHA1)
-    FILE(GLOB SRC_SHA1 src/ppc/*.c)
+    FILE(GLOB SRC_SHA1 src/ppc/*.c src/ppc/*.S)
 ELSE ()
 	SET (SRC_SHA1)
 ENDIF()