diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1e3d3e9bd..1e50d1a86 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,11 +61,13 @@ if(WIN32 AND MSVC)
 	set(CMAKE_PREFIX_PATH "${QT5_PATH};${SQLITE3_PATH}")
 endif()
 
+find_package(Qt5 REQUIRED COMPONENTS Concurrent Gui LinguistTools Network PrintSupport Test Widgets Xml)
+
 if(NOT FORCE_INTERNAL_ANTLR)
     find_package(Antlr2 QUIET)
 endif()
 if(NOT FORCE_INTERNAL_QSCINTILLA)
-    find_package(QScintilla QUIET)
+    find_package(QScintilla 2.8.10 QUIET)
 endif()
 
 set(QHEXEDIT_DIR libs/qhexedit)
@@ -82,8 +84,6 @@ endif()
 add_subdirectory(${QHEXEDIT_DIR})
 add_subdirectory(${QCUSTOMPLOT_DIR})
 
-find_package(Qt5 REQUIRED COMPONENTS Concurrent Gui LinguistTools Network PrintSupport Test Widgets Xml)
-
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
diff --git a/cmake/FindQScintilla.cmake b/cmake/FindQScintilla.cmake
index 082b94f1b..4d2317744 100644
--- a/cmake/FindQScintilla.cmake
+++ b/cmake/FindQScintilla.cmake
@@ -42,9 +42,23 @@
 # either expressed or implied, of the FreeBSD Project.
 #=============================================================================
 
-
+# When using pkg-config, paths may contain odd slash placement. Each
+# include directory is pre-processed here. Resultant list variable
+# then used for search hinting. Depends on successful find_package(Qt5).
+set(Qt5QScintillaHintDirs)
+if(UNIX)
+    foreach(item ${Qt5Widgets_INCLUDE_DIRS})
+        # remove slash at end of line
+        STRING(REGEX REPLACE "\\/$" "" item ${item})
+        # replace double slashes is single slashes
+        STRING(REGEX REPLACE "\\/\\/" "/" item ${item})
+        list(APPEND Qt5QScintillaHintDirs "${item}/Qsci")
+    endforeach()
+endif()
 find_path ( QSCINTILLA_INCLUDE_DIR qsciscintilla.h
-  HINTS /usr/local/include/Qsci /usr/local/opt/qscintilla2/include/Qsci
+  HINTS /usr/local/include/Qsci
+        /usr/local/opt/qscintilla2/include/Qsci
+        ${Qt5QScintillaHintDirs}
 )
 
 set ( QSCINTILLA_INCLUDE_DIRS ${QSCINTILLA_INCLUDE_DIR} )