1 files changed, 4 insertions, 3 deletions

diff --git a/scripts/basic/split-include.c b/scripts/basic/split-include.c
index 60934b5b1..e328788e2 100644
--- a/scripts/basic/split-include.c
+++ b/scripts/basic/split-include.c
@@ -110,11 +110,12 @@ int main(int argc, const char * argv [])
 
         if (line[0] != '#')
             continue;
-        if ((str_config = strstr(line, "CONFIG_")) == NULL)
+        if ((str_config = strstr(line, " CONFIG_")) == NULL)
             continue;
 
-        /* Make the output file name. */
-        str_config += sizeof("CONFIG_") - 1;
+        /* We found #define CONFIG_foo or #undef CONFIG_foo.
+         * Make the output file name. */
+        str_config += sizeof(" CONFIG_") - 1;
         for (itarget = 0; !isspace(str_config[itarget]); itarget++)
         {
             int c = (unsigned char) str_config[itarget];