diff --git a/base/proposal.dtx b/base/proposal.dtx
index bb4f835..0deac5a 100644
--- a/base/proposal.dtx
+++ b/base/proposal.dtx
@@ -697,14 +697,14 @@
 \renewcommand{\headrulewidth}{0pt}
 \renewcommand{\footrulewidth}{0.4pt}
 \else
-\fancyhead[RE,LO]{\ifx\prop@gen@acronym\@empty\prop@gen@acronym\fi}
+\fancyhead[RE,LO]{\ifx\prop@gen@acronym\@empty\else\prop@gen@acronym\fi}
 \fancyhfoffset{0pt}
 \fi
 \fancyfoot[C]{}
 \newcommand\prop@of@pages[2]{page~#1\ifofpage~of~#2\fi}
 \ifgrantagreement
 \fancyfoot[L]{\prop@gen@proposalnumber%
-\ifx\prop@gen@acronym\quad \prop@gen@acronym\fi\quad --\quad Part B}
+\ifx\prop@gen@acronym\@empty\else\quad \prop@gen@acronym\fi\quad --\quad Part B}
 \fancyfoot[R]{\thepage}
 \else
 \fancyhead[LE,RO]{\prop@of@pages\thepage{\pdataref@num{prop}{page}{last}}}
@@ -852,7 +852,7 @@
 \begin{center}
   {\LARGE \prop@gen@instrument}\\[.2cm]
   {\LARGE\textbf{\prop@gen@title}}\\[.3cm]
-  {\LARGE Acronym: {\prop@gen@acronym}}\\[.2cm]
+  \ifx\prop@gen@acronym\@empty\else{\LARGE Acronym: {\prop@gen@acronym}}\\[.2cm]\fi
   {\large\today}\\[1em]
   \begin{tabular}{c*{\the@PIs}{c}}
     \prop@tl\prop@gen@PIs{\wa@ref3{person}\tl@ext{name}}\\
diff --git a/base/proposal.pdf b/base/proposal.pdf
index dc8e3b0..f14be80 100644
Binary files a/base/proposal.pdf and b/base/proposal.pdf differ
diff --git a/base/proposal.sty b/base/proposal.sty
index 9fecb2e..115a1ef 100644
--- a/base/proposal.sty
+++ b/base/proposal.sty
@@ -54,14 +54,14 @@
 \renewcommand{\headrulewidth}{0pt}
 \renewcommand{\footrulewidth}{0.4pt}
 \else
-\fancyhead[RE,LO]{\ifx\prop@gen@acronym\@empty\prop@gen@acronym\fi}
+\fancyhead[RE,LO]{\ifx\prop@gen@acronym\@empty\else\prop@gen@acronym\fi}
 \fancyhfoffset{0pt}
 \fi
 \fancyfoot[C]{}
 \newcommand\prop@of@pages[2]{page~#1\ifofpage~of~#2\fi}
 \ifgrantagreement
 \fancyfoot[L]{\prop@gen@proposalnumber%
-\ifx\prop@gen@acronym\quad \prop@gen@acronym\fi\quad --\quad Part B}
+\ifx\prop@gen@acronym\@empty\else\quad \prop@gen@acronym\fi\quad --\quad Part B}
 \fancyfoot[R]{\thepage}
 \else
 \fancyhead[LE,RO]{\prop@of@pages\thepage{\pdataref@num{prop}{page}{last}}}
@@ -73,7 +73,7 @@
 \begin{center}
   {\LARGE \prop@gen@instrument}\\[.2cm]
   {\LARGE\textbf{\prop@gen@title}}\\[.3cm]
-  {\LARGE Acronym: {\prop@gen@acronym}}\\[.2cm]
+  \ifx\prop@gen@acronym\@empty\else{\LARGE Acronym: {\prop@gen@acronym}}\\[.2cm]\fi
   {\large\today}\\[1em]
   \begin{tabular}{c*{\the@PIs}{c}}
     \prop@tl\prop@gen@PIs{\wa@ref3{person}\tl@ext{name}}\\