diff --git a/.travis.yml b/.travis.yml
index ab8cb6983ed..8d1b6f4c4b3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: cpp
 compiler: gcc
 install:
-  - sudo apt-get install yasm libgmp-dev
+  - if [ "$BIGNUM" = "gmp" -o "$FIELD" = "gmp" ]; then sudo apt-get install -qq libgmp-dev; fi
+  - if [ "$FIELD" = "64bit_asm" ]; then sudo apt-get install -qq yasm; fi
 env:
   global:
     - FIELD=auto      BIGNUM=auto     ENDOMORPHISM=no  BUILD=check