diff --git a/build.gradle b/build.gradle
index 6c1701f1..468ac788 100644
--- a/build.gradle
+++ b/build.gradle
@@ -38,13 +38,16 @@ repositories {
 }
 
 configurations {
-    linux64.extendsFrom(implementation)
-    win32.extendsFrom(implementation)
-    win64.extendsFrom(implementation)
-    mac.extendsFrom(implementation)
-    any.extendsFrom(implementation)
+    linux64
+    win32
+    win64
+    mac
+    any
+    jna
 
-    compileOnly.extendsFrom(getAt(platform)) // // compile with current platform's SWT
+    // compile and test with current platform's SWT and JNA
+    compileOnly.extendsFrom(getAt(platform))
+    compileOnly.extendsFrom(jna)
     testImplementation.extendsFrom(getAt(platform))
     runtimeClasspath.extendsFrom(getAt(platform))
     all*.exclude module: 'org.eclipse.swt' // transitive dependency in Maven that fails
@@ -57,7 +60,7 @@ dependencies {
     win32 "org.eclipse.platform:org.eclipse.swt.win32.win32.x86:3.108.0"
     mac "org.eclipse.platform:org.eclipse.swt.cocoa.macosx.x86_64:${swtVersion}"
 
-    compileOnly files('lib/jna.jar')
+    jna files('lib/jna.jar')
     testCompile 'junit:junit:4.12'
     testCompile 'org.mockito:mockito-core:2.23.0'
 }