diff --git a/cockatrice/CMakeLists.txt b/cockatrice/CMakeLists.txt
index 92586891..be347188 100644
--- a/cockatrice/CMakeLists.txt
+++ b/cockatrice/CMakeLists.txt
@@ -201,10 +201,13 @@ if(Qt5Widgets_FOUND)
         list(APPEND COCKATRICE_LIBS LinguistTools)
     endif()
 
-    # Let cmake chew Qt4's translations and resource files
+    # Let cmake chew Qt5's translations and resource files
     # Note: header files are MOC-ed automatically by cmake
     QT5_ADD_TRANSLATION(cockatrice_QM ${cockatrice_TS})
     QT5_ADD_RESOURCES(cockatrice_RESOURCES_RCC ${cockatrice_RESOURCES})
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 # Declare path variables
diff --git a/oracle/CMakeLists.txt b/oracle/CMakeLists.txt
index 99abc4d1..b6db8eb4 100644
--- a/oracle/CMakeLists.txt
+++ b/oracle/CMakeLists.txt
@@ -63,6 +63,9 @@ if(Qt5Widgets_FOUND)
         include_directories(${Qt5Svg_INCLUDE_DIRS})
         list(APPEND ORACLE_LIBS Svg)
     endif()
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 INCLUDE_DIRECTORIES(../cockatrice/src)
diff --git a/servatrice/CMakeLists.txt b/servatrice/CMakeLists.txt
index b1fc00c8..a5743f8e 100644
--- a/servatrice/CMakeLists.txt
+++ b/servatrice/CMakeLists.txt
@@ -51,6 +51,9 @@ if(Qt5Widgets_FOUND)
         include_directories(${Qt5Sql_INCLUDE_DIRS})
         list(APPEND SERVATRICE_LIBS Sql)
     endif()
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 SET(QT_DONT_USE_QTGUI TRUE)