diff --git a/.github/workflows/Linux_options.yml b/.github/workflows/Linux_options.yml
index 9e5b7810..69ed9015 100644
--- a/.github/workflows/Linux_options.yml
+++ b/.github/workflows/Linux_options.yml
@@ -28,7 +28,7 @@ jobs:
       matrix:
         config:
         - {
-            options: "-DUSE_IPOLATES"
+            options: "-DUSE_IPOLATES=1"
           }
           
     steps:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index f5c592f2..28233ae7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,8 +8,7 @@ option(USE_HDF5 "Use HDF5?" off)
 option(USE_REGEX "Use Regex?" on)
 option(USE_TIGGE "Use tigge?" on)
 option(USE_MYSQL "Use MySQL?" off)
-option(USE_IPOLATES "Use NCEPLIBS-ip interpolation library?" off)
-set(USE_IPOLATES 0)
+option(USE_IPOLATES "iplib=0,1,3?" 3)
 option(USE_UDF "Use UDF?" off)
 option(USE_OPENMP "Use OpenMP?" on)
 option(USE_PROJ4 "Use Proj4?" off)
@@ -75,11 +74,11 @@ if(USE_NETCDF3 AND USE_NETCDF4)
 endif()
 
 # If user wants to use NCEPLIBS-ip, find it and the sp library.
-if(USE_IPOLATES)
+if(USE_IPOLATES EQUAL 1)
   find_package(ip CONFIG REQUIRED)
   find_package(sp CONFIG REQUIRED)
-# elseif(USE_IPOLATES EQUAL 3)
-#   find_package(ip2 CONFIG REQUIRED)
+elseif(USE_IPOLATES EQUAL 3)
+  find_package(ip2 CONFIG REQUIRED)
 endif()
 
 if(USE_NETCDF4)