diff --git a/cmake/SUNDIALSConfig.cmake.in b/cmake/SUNDIALSConfig.cmake.in
index 6846c5353..e4c6d32ee 100644
--- a/cmake/SUNDIALSConfig.cmake.in
+++ b/cmake/SUNDIALSConfig.cmake.in
@@ -69,7 +69,7 @@ endif()
 
 if(@ENABLE_PETSC@)
   set(PETSC_LIBRARY_SINGLE "@PETSC_LIBRARY_SINGLE@")
-  if(${PETSC_LIBRARY_SINGLE})
+  if(PETSC_LIBRARY_SINGLE)
     foreach(suffix SYS VEC MAT DM KSP SNES TS ALL)
       if(NOT TARGET SUNDIALS::PETSC_${suffix})
         add_library(SUNDIALS::PETSC_${suffix} UNKNOWN IMPORTED)
@@ -78,7 +78,7 @@ if(@ENABLE_PETSC@)
         set_target_properties(SUNDIALS::PETSC_${suffix} PROPERTIES
           INTERFACE_LINK_LIBRARIES "@PETSC_LIBRARIES_@")
         set_target_properties(SUNDIALS::PETSC_${suffix} PROPERTIES
-          INTERFACE_COMPILE_OPTIONS "@PETSC_DEFINITIONS@")
+          INTERFACE_COMPILE_OPTIONS [=[@PETSC_DEFINITIONS@]=])
         set_target_properties(SUNDIALS::PETSC_${suffix} PROPERTIES
           IMPORTED_LOCATION "${PETSC_LIBRARY_SINGLE}")
       endif()
@@ -110,7 +110,7 @@ if(@ENABLE_PETSC@)
         set_target_properties (SUNDIALS::PETSC_${suffix} PROPERTIES
           INTERFACE_LINK_LIBRARIES "${PETSC_LIBRARIES_${suffix}}")
         set_target_properties (SUNDIALS::PETSC_${suffix} PROPERTIES
-          INTERFACE_COMPILE_OPTIONS "${PETSC_DEFINITIONS}")
+          INTERFACE_COMPILE_OPTIONS [=[@PETSC_DEFINITIONS@]=])
         set_target_properties (SUNDIALS::PETSC_${suffix} PROPERTIES
           IMPORTED_LOCATION "${PETSC_LIBRARY_${suffix}}")
       endif()