diff --git a/security/zeek/Makefile b/security/zeek/Makefile
index 6499e2834073..cdb4f82d46bd 100644
--- a/security/zeek/Makefile
+++ b/security/zeek/Makefile
@@ -12,14 +12,15 @@ COMMENT=	System for detecting network intruders in real-time
 
 LICENSE=	BSD3CLAUSE
 
-BROKEN_FreeBSD_11_powerpc64==	Does not build: error: zero-size array 'names'
-BROKEN_FreeBSD_12_powerpc64==	Does not build: error: zero-size array 'names'
+BROKEN_FreeBSD_11_powerpc64=	Does not build: error: zero-size array 'names'
+BROKEN_FreeBSD_12_powerpc64=	Does not build: error: zero-size array 'names'
 
 USES=		bison cmake compiler:c++11-lang gettext-runtime ninja perl5 python shebangfix ssl
 USE_LDCONFIG=	yes
 
 PORTSCOUT=	limit:0,even
 
+CXXFLAGS_powerpc64=	-mpower8-vector
 CMAKE_ARGS+=	-DPYTHON_EXECUTABLE:PATH=${PYTHON_CMD}
 
 SHEBANG_FILES=	auxil/zeekctl/auxil/trace-summary/trace-summary
diff --git a/security/zeek/files/patch-auxil_highwayhash_highwayhash_arch__specific.cc b/security/zeek/files/patch-auxil_highwayhash_highwayhash_arch__specific.cc
new file mode 100644
index 000000000000..eda7565aad24
--- /dev/null
+++ b/security/zeek/files/patch-auxil_highwayhash_highwayhash_arch__specific.cc
@@ -0,0 +1,11 @@
+--- auxil/highwayhash/highwayhash/arch_specific.cc.orig	2021-03-23 17:45:40 UTC
++++ auxil/highwayhash/highwayhash/arch_specific.cc
+@@ -150,7 +150,7 @@ double DetectNominalClockRate() {
+   }
+  #elif __FreeBSD__
+   size_t length = sizeof(freq);
+-  sysctlbyname("dev.cpu.0.freq"), &freq, &length, NULL, 0);
++  sysctlbyname("dev.cpu.0.freq", &freq, &length, NULL, 0);
+   freq *= 1E6;
+   return freq;
+ #endif