diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef85176..3f7c6a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,7 +79,7 @@ if(CMAKE_SYSTEM_NAME MATCHES "SunOS")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D__EXTENSIONS__")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_XOPEN_SOURCE=600")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DBSD_COMP")
-	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fpic -m64")
+	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fpic")
 endif()
 
 add_definitions(-DLIBRESSL_INTERNAL)
diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 4f56a8d..761a51d 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -112,7 +112,6 @@ char buf[1]; getentropy(buf, 1);
 	*solaris*)
 		HOST_OS=solaris
 		HOST_ABI=elf
-		CFLAGS="$CFLAGS -m64"
 		CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
 		AC_SUBST([PLATFORM_LDADD], ['-lnsl -lsocket'])
 		;;