diff --git a/build.go b/build.go
index 27c71b1b..e831a210 100644
--- a/build.go
+++ b/build.go
@@ -16,7 +16,7 @@
 
 package openssl
 
-// #cgo pkg-config: libssl
+// #cgo pkg-config: libssl libcrypto
 // #cgo windows CFLAGS: -DWIN32_LEAN_AND_MEAN
 // #cgo darwin CFLAGS: -Wno-deprecated-declarations
 import "C"