diff --git a/ground/gcs/gcs.pri b/ground/gcs/gcs.pri
index bbe138e0f..d4feb9108 100644
--- a/ground/gcs/gcs.pri
+++ b/ground/gcs/gcs.pri
@@ -153,6 +153,7 @@ macx {
     GCS_DOC_PATH     = $$GCS_DATA_PATH/doc
     copydata = 1
     copyqt = 1
+    copyosg = 1
 } else {
     GCS_APP_TARGET = $$GCS_SMALL_NAME
     GCS_PATH         = $$GCS_BUILD_TREE
@@ -178,6 +179,7 @@ macx {
         GCS_QT_QML_PATH = $$GCS_APP_PATH
 
         copyqt = $$copydata
+        copyosg = $$copydata
     } else {
         GCS_QT_BASEPATH = $$GCS_LIBRARY_PATH/qt5
         GCS_QT_LIBRARY_PATH = $$GCS_QT_BASEPATH/lib
@@ -190,6 +192,7 @@ macx {
         } else {
             copyqt = 0
         }
+        copyosg = 1
     }
 }
 
diff --git a/ground/gcs/src/libs/osgearth/copydata.pro b/ground/gcs/src/libs/osgearth/copydata.pro
index 191a01188..9d22738bd 100644
--- a/ground/gcs/src/libs/osgearth/copydata.pro
+++ b/ground/gcs/src/libs/osgearth/copydata.pro
@@ -1,13 +1,13 @@
 #
 # copy osg and osgearth libraries and data to build dir
 #
-equals(copydata, 1) {
+equals(copyosg, 1) {
 
     OSG_VERSION = 3.4.0
 
     linux {
         # copy osg libraries
-        exists($(OSG_SDK_DIR)/lib64) {
+        exists( $${OSG_SDK_DIR}/lib64 ) {
 	        #addCopyDirFilesTargets($${OSG_SDK_DIR}/lib64,$${GCS_LIBRARY_PATH}/osg)
         } else {
 	        #addCopyDirFilesTargets($${OSG_SDK_DIR}/lib,$${GCS_LIBRARY_PATH}/osg)
diff --git a/ground/gcs/src/libs/osgearth/osgearth.pro b/ground/gcs/src/libs/osgearth/osgearth.pro
index 042b4107c..47d15d7cf 100644
--- a/ground/gcs/src/libs/osgearth/osgearth.pro
+++ b/ground/gcs/src/libs/osgearth/osgearth.pro
@@ -59,10 +59,10 @@ SOURCES += \
 INCLUDEPATH += $$OSG_SDK_DIR/include
 
 linux {
-    !exists( $(OSG_SDK_DIR)/lib64 ) {
-        LIBS += -L$$OSG_SDK_DIR/lib
-    } else {
+    exists( $$OSG_SDK_DIR/lib64 ) {
         LIBS += -L$$OSG_SDK_DIR/lib64
+    } else {
+        LIBS += -L$$OSG_SDK_DIR/lib
     }
 
     LIBS +=-lOpenThreads